Justifying the mechanism which could support a utopia with "Robots can take care of the menial tasks" doesn't make sense, because no they cannot. Instead, the menial task changes from "Wash the dishes" to "Fix and maintain the robots", "Help assemble the robots", and "Clean up the mess when the robots screw up." Even if we have robots for those tasks as well, at some point it requires a human touch.
Likewise, the world's problems wouldn't go away with a redistribution of wealth. Removing all debt just destroys the value of the money, resulting in an economic crash which destabilizes a country even further. The money is where it is for a reason, with checks and balances of the availability versus the spending. Want to know what happens when you ignore the debt and try and naively make it go away? You end up with an out-of-control rate of inflation which makes defining the value of anything impossible.
Check out what happened when Germany was just printing money to cover their debts. Same principal: Flooding the world market with all the money locked up in the 1% would just devalue the money's worth and result in a huge market crash.
As far as propping up a capitalist regime? Damn right I do. The work I do has value to my employer, but the value I bring him in doing the labor has to be weighed against the availability of the labor I perform. The skills you learn off and on the job define the value of your time, because the skills you learn can be worth something.
If someone is stuck being a dishwasher, they have no marketable job skills. We live in a world where there are hundreds, if not thousands of free resources which allow a person to learn those skills while working as a dishwasher. Does self-betterment and at-home learning guarantee you a better job and a better life? Hell no. But it's a damned good place to start.
As an aside, true equality is a terrible thing, because it rewards mediocrity: Why would anyone go through the time and stress of becoming a medical doctor if the end result of all their hard work and study is that their standard of living is still the same? Socialism frequently rewards mediocrity, while capitalism rewards hard work. Maybe you weren't born with rich parents and all the advantages, but with some luck and plenty of hard work your children might be born that way.
We may one day see a world where barely anybody has to work, but I imagine it'll more resemble Monica Hughes' The Game rather than a utopia.
This is an awfully limited mindset rooted entirely in prejudices formed within the boundaries of the current system. Of course you've been raised within a capitalist regime that espouses all the positives of capitalism intrinsically as it works to mold you into a perfect consumer, so seeing these arguments regurgitated over and over again is quite unsurprising, but that also means I can address all of them.
Indeed, in a utopian vision of the future
someone would have to be maintaining the robots and machines that keep things running. You can assume that there will be people volunteering to help, because helping with maintenance intrinsically benefits them, their families, their friends, and everyone else who depends on such machines to help them live.
This touches on the root of motivation, which you seem to believe CANNOT be intrinsic, but must instead be externally motivated. This isn't just false - this is straight up capitalist propaganda! The grand majority of the world's great scientists are all intrinsically motivated by a desire to better understand the world, and through that understanding, better the world itself.
No scientist is in it for the money, which is no surprise when you consider that your funding as a scientist is extremely volatile and heavily dependent on how much you can game the system. It's the same thing with art - how many artists do you know who would say they are simply in it for the money?
The only thing money does is get people to perform work they would otherwise have
absolutely no interest in simply so that they can survive. Who gets a degree in finance because they simply love finance? Who works a factory job because they love repeating the same drudgery 8+ hours a day? This is, of course, useful in a society pre-automation as you need SOMEONE to work those jobs, but once automation becomes en vogue and those jobs are taken away, what then?
Then you have to consider that your frame of reference for a non-capitalist society... are all still capitalist societies at their core, because
they still use money. The only way for us to truly know what a non-capitalist society actually looks like is to transition to a world that completely eschews the use of money, and that means the
entire planet must do so, not just a state or country or two at a time. Furthermore, the system itself must be built with an eye towards natural law (a.k.a. SCIENCE) rather than simple ideology. Communism and socialism are quite flawed in that they only work off of social ideologies rather than using the scientific method to help guide policies towards actually fixing many of our societal problems at their core.
You also make the assertion that true equality wouldn't work by couching it in a monetary argument that has no bearing on
reality. The system itself can be altered to work in such a way that inflation is no longer an issue. For that matter, the money system itself should be getting phased out once we reach the point of a basic universal income. Furthermore,
just look at all the problems that are correlated with inequality, and consider just how much crime and social unrest goes away when you take away the problem of money. Having large swathes of the population no longer having to live with the anxiety of not knowing whether or not they'll have a roof over their heads and food on the table the next day massively improves
everyone's lives, period.
This is all tangential to the real issue at hand, mind you - the fact that our capitalist system is thrusting us headlong into actual global catastrophe. To wit:
1. The debt system creates such massive amounts of debt that no one can actually keep paying it off unless the global economy just keeps growing infinitely... and as we all know, nothing on planet Earth can grow infinitely. Economies all over WILL collapse inevitably as a part of the system itself.
2. Speaking of infinite growth, our capitalist paradigm requires us to consume ever-greater natural resources, resources that cause environmental havoc when consumed in great quantities. We
must transition to a system that can survive with a steady-state economy as opposed to an infinite-growth one if we wish to survive as a species. No, that's not even hyperbole. We HAVE to do this.
3. Our technological reality is at odds with capitalism. As our technological capabilities grow, automation continues to take more and more jobs from the population. Technological unemployment is a part of our reality, and we have to recognize and work towards a future where that unemployment does not translate to negative effects on our society as a whole. It's paradoxical that our productivity increases, yet our lives as individuals suffer ever more simply because the system was not designed to account for it. Hell, you'd think planned obsolescene alone would have been enough to tell everyone 'this shit is fucked up', but apparently not.
Whether or not we SHOULD move away from a capitalist economy isn't even a question at this point. It's something we have to do as a species to continue coexisting on this tiny rock we call Earth. Failure to do so entails potentially catastrophic instability as our society strains at the seams to right itself as the system continues to suffer under the weight of its own malaise. One can only hope we collectively wake up soon enough to stop that constant spiral of madness from descending ever deeper.
Edit: I HIGHLY recommend watching the web series
A Culture in Decline, as it helps greatly to illuminate these problems and just how many of them are intrinsic to the system itself.