i go in phases, i can go for weeks and play maybe an hour or so and then when i get chance i can spend a few hours a day for a week or so.
mine is normally down to work schedule, some months i work in excess of 300 hours somes month i barely pass 100 then take into account a daughter, decorating, diy, playing guitar and just general family time it can be a struggle to fit in.
ive also recently got into trying to finish what single player games i have before buying the next one, i still have the usual multiplayer games but try to concentrate on single player campaigns. my current PS3 list of to complete games are, Uncharted 2, FFXIII, Saints Row 2 and COD WaW. it doesnt help either that im picking up a Wii this week for the misses with the Mario Games and Zack and Wiki.