Damn, you've got me!
No, seriously, I run many programs on my PC at any given time. So my computer is always on. Playing music for instance....
The machine manages all these things by itself, and I do other stuff in the meantime. I just have my explorer on this site, and whenever something happens on this site my computer goes "BING"! So I look what is going on and answer if I feel it is appropriate.
I only look for games when I have some sparetime. Remember that I study medicine. That takes up a lot of time! :wink: