I went from being on 3-5 hours a day to a few hours a week.
Why do I keep coming back? Simple.
RP - There are some amazing RPers out there. One in particular who is worth re-subbing for!
Music - Nothing beats walking around Eversong+Silvermoon. Darnassus even.
WPvP - Not the same without the ol' Warbringing Kaldorei swinging his sword at my bubble but amusing nonetheless.