No one is forcing you to watch. Children and anyone who is opposed to UFC cannot access it unless they're up late the odd time it's free, in a sports bar, their parents bought the PPV, or they have unrestricted access to the internet. (The latter two cases are probably shitty parenting.)
There are many countries that host and televise martial arts events.
There is discipline and respect amongst a lot of fighters. Some are douchebags for the camera, playing a villain. But hey, that's kind of like boxing!
Honestly, if you have any foresight, UFC will conclude its time in the limelight and go back to being a semi-obscure sport once people get tired of it. Just like -- sorry for saying this UFC fans, but I really believe this -- poker did with WPT and all that in the mid-'00s.
And if you think UFC is bad right now, you should've seen it in the '90s. That shit was fucking brutal. The sport has come a long way -- it was forced to clean up its image and add rules to further protect fighters.
Next time, OP, do some reading. I barely watch UFC and I know all this.