I've heard that valve might be putting off release because everyone has super duper high expectations of it, and they fear that it might not live up to this.
Seems like kind of a fair reason to me but maybe I'm just crazy
Now with a list of games I want to play [again]
-shogun 2 total war: it's been too long since I last played this
-Super Smash Bros. U: do I even need to explain, brah?
-Mario Kart 8: zomg antigravity
-Super Mario World 2: Yoshi's Island: classic. One of the nicest Mario games if you ask me.
-Planetary Annihilation: basically Super Mario Galaxy but you blow up the planets! What else do you want?
-Prison Architect: RIOT RIOT RIOT
-Crysis 3: PEW PEW PEW
These are just a small list out of all the games I wanna play. I can't lost them all because I'm lazy and I think this post would be TL;DRed by everyone anyways.