Ok, the 'puter is my vice. I have it on all day, and look in on it periodically. My kids could care less about the computer. i probably spend about 1-2 hours a day.
I use it for probably an hour a day broken up into 5 10 or 15 minutes at a time.
Usually I just check in on the forums or I use it to look stuff up pertaining to a home project, health etc.
My kids only use it for homework so it mostly just sits here.