I have trouble finishing games now

As I get older I am having a really hard time finishing games. After seeing the AC: Brotherhood stuff I just went back to AC: II and i'm only about half way through. Its a good game but I have trouble putting in the time. 
I do play a lot of multiplayer like L4D and SCII on my PC so that could be part of it and I also like Download games like super meat boy. 
Full sized games just seem really long.



I'm sure this seems like a bullshit post but I really feel like these quests will increase my activity on the site.