You would be able to if you played the right game.
i played one game for 8 months for more than 8 hours a day, but i did have more time then an less things to do.
if i wasnt playing games id only be watching tv or sumthing an thats even less constructive.
Im currently gameless atm tho

but i work on my server for 8 hours...and im not addicted to that.