Growing up, I would spend every waking minute of my free time playing video games. I couldn't wait to get out of school so I could get home and play the NES, SNES, Sega Genesis and after a while, the Playstation. I'd dream of the games I didn't have. I never got to play N64 until years later when I could download it on my PC. I'd spend days grinding through long and tedious RPGs, becoming completely absorbed by them.
These days, I feel like I'm forcing myself to play the games I used to love. I barely get passed the beginning of Final Fantasy VI before completely losing interest... same for Zelda OoT... freakin' ZELDA!
It's not just old games though. All of the games I've bought recently... Mass Effect 2, Red Dead Redemption, L.A. Noire, Pokémon White-- all of them played through no further than halfway.
Part of it might be MMORPGs fault... there is something about playing with live people that single player games cannot deliver, and usually they are the only games me and my wife can play together. Though, even they are becoming dull and tiresome.
I am still only 25... some part of me still wants to do it, but I just don't have the patience anymore. Maybe I'll get over it... hopefully. There is nothing else to do and work only offers so many hours per week.