This and this whole thread, I agree so much. I don't regret buying the game, or playing what I have; I'll play the game when my mood is at its best definitely, but I'll need to stay away from the game when it's not (I'm having to shelf it now, for instance.)
There are already so many games out there that have the "nothing you did mattered" aspect to them - and so many more where you're punished no matter what you choose. That doesn't make the game fun, you feel punished for just playing the game. And like shock therapy, you just don't want to play it after a while.
Hell, Bloodborne and Dark Souls are some of the most difficult games to play, but they are made so they are also rewarding and you feel pumped when you get past something that was hard before you gained enough levels. And those are dark games with sad messages, but you still come out feeling like you did something. You're only punished if you rush in unprepared and not enough experience.
There's nothing wrong with dark stories. I love cosmic horror and tragic characters, but when such a genre becomes commonplace and you have no way of achieving some semblance of kindness, you grow weary. There needs to be growth in the story and in the characters, else it all just feels stagnant. That's not a rewarding experience, and it's memorable for the wrong reasons.