Seriously you actually think 33 is old in relation to gaming?
I'm 34 and the avergae age of a gamer last I checked was 37 so if anything your still "young".
Besides I'd imagine younger gamers aren't as interested in stats/charts :)
As for time spent on games all depends on how addictive it is. Games like Assassins creed games I can spend a couple of hours before getting bored whereas Xcom I spent at least 7 hours a day on it over several week :)
But again i'm amazed and amused you would think you would be anywhere near the oldest gamer :D on this site.