It's some kind of subconscious brain washing, I guess. For a while, it felt strange playing Wii games because nobody knew I was playing them (no online friends list). Then, it felt strange playing PS3 games because there wasn't a reward (aside from playing the game) for playing the game. I'd tell myself ,"if I was paying this on the 360, I'd probably have gotten 500 Achievement points for that", or something. When the PS3 finally started getting trophies, I'd tell myself "Trophies don't matter because I've played a ton of games already, and I didn't get any credit for them." As a result, I play Nintendo and Sony games for fun. If it's available for the PS3 and 360, I always buy the 360 version. That way, I play for fun AND I keep my lead on Elgefe02's Gamerscore. He doesn't even know that I'm ALWAYS competing with him.
I'm catching up! not updated in a while :)