Hmm.

Well since i'm 12, and im in only 7th grade...

I'd say about 14 hrs together on the weekend and 18 on the weekdays. ( I get off school at 3 and go to bed around 10.. I game for 3 hours AT THE LEAST between that period) Also, for the weekends i usually wake up at 2 and go to bed at 4 am. About 1/4th that period is gaming. Leaving me tons of things to do (paintball; excersize;etc).

I think i can spend a lot of time on it, seeing as how i played Runescape and diabloII for 10 hrs straight in one day.