Maybe it's because I'm getting older and realizing I have less time in this world, or maybe Nintendo just sold me on their Wii style of more pick-up-and-play fast paced gaming, but I've found myself becoming more of an old school gaming snob and having less patience with all that extra fluff these multimillion dollar blockbuster games of today have. Specifically stuff like cutscenes, lots of dialogue, tutorials, loading screens, etc. I want to just play my damn game, and I want to play it NOW. I don't care for sitting through 10 minutes of cutscenes or tutorials before I even get to use my controller.
I also want maximum control of my game. Like the games you mentioned - Assassin's Creed and Uncharted - I tried to like those games, and they are really well made if you're into that sort of thing, but they contain too much of that "fluff" that I mentioned, and also they seem to limit the freedom of the player.
This is why as of late I've really been embracing more arcade-style games like NSMB, Mario Kart Wii, Sonic, Kirby, DKC, Rayman Origins, and more open world games like Fallout, Skyrim, etc.
Also, I find myself playing much more online multiplayer like Gears of War and Call of Duty, and doing less single player campaigns. And I think that ties into my previous point - online multi gives the player maximum control, while single player tends to contain far more of that "fluff" that IMO bogs down a game.
