My brother (13) really wanted to be able to play the mods, and couldn't on the console, I guess? So he kept trying to save up for a gaming computer. My boyfriend built one (at my parents' commission, basically) for him, and he's been on it pretty much non-stop since Christmas (or, anytime he isn't doing school). He was playing mods and everything, then finally begged my boyfriend to help him set up his own server so he can play with friends.
It's a non-stop thing around here.