The people that are chalking this up to entitlement are kind of pissing me off. This is not an issue of whinging to get something you don't deserve simply because you want it. Saying "some things just aren't for you" and shrugging it off is a cop out.
Video games are at a really unique and tricky position in this sort of discussion. They're the only entertainment medium that actively prevent you from experiencing it based on your level of skill. You can't fail at watching a movie. You can't fail at reading a book. But a game has the liberty of being able to say "you bought me and own me but you aren't good enough to fully access everything that I am".
For some people, the process of learning, adapting to, and overcoming the challenge of a game is part of the fun. Kudos! You have successfully enjoyed your game, gotten your money's worth, and accessed everything available. For other people maybe they want to experience the full content but they're just bad and have to give up. They end up not getting their entire money's worth simply because they lack a skill. Would you deny them the chance to experience the game? I think that's pretty fucked up.
To those saying they should just watch a Let's Play, that's not the same. There is a satisfaction to controlling and experiencing a game at your own pace, by your own rules and design, that watching a video doesn't offer. You can't make the movie comparison here. Making a game easier doesn't mean that nobody gets satisfaction at being the agent of the game's completion.
So like I said, games as an entertainment medium are unique. If a dev specifically wants their game to be hard as balls with no easier mode and 90% of the people that buy it will never complete it, well, that's their prerogative. Of course they get the final say in what their game is and should be. But if you ask me, if you can include modes that make it possible for less skilled people to buy and experience your game without hampering the experience of those who want a challenge, well, where's the harm? I enjoyed the challenge of beating a Souls game, but I guarantee you that there are people who would be happy and have fun with a Dark Souls easy mode. It doesn't affect you and it makes someone else happy. Why not?