I was gonna let everything you just said pass,... untill you started talking about how much the visuals sucked.
Different strokes, I guess, but I fucking loved the visual design of this game. Everything about it felt weird, twisted, and creepy, which only amplified the sensation of a mad world that simply wants to kill you. It had enough of a knights/castle type fantasy design to feel grounded in reality, but altered to such a degree that it feels totally unique, and above all, fucked up.
The real problem I had with Dark Souls was that ultimately you don't get a sense of gratification from defeating tough monsters and Bosses anymore. You defeat one tough Boss, there'll be a tougher one after him. You defeat that guy, and an even stronger monster takes his place. And after you defeat him... You get my point. You never reach a point were you feel like you've properly achieved anything, because the rabbit hole keeps going deeper and deeper, constantly revealing tougher challenges. This is the main appeal of the game, but in every game you should atleast get a sense that you're gaining some ground.
And the fact that the game lacks a direct narrative and characters means there's no real emotional engagement or drive beyond "Fuck, I'm gonna die, I'm gonna die".
The game simply wore me out, and I stopped short of defeating The Bed of Chaos. Which is a lot more threatening than its name might suggest.