Well I graduated HS in 1992 and am still working on my 4 year degree. I was a good student for about 2 years, then started "partying", was a half-assed student for another 2, stopped going completely and started working for 4 years and just recently went back when I can be serious about it.
Before you ask, yes I do wish I had completed my degree before now. I would not be willing to sacrifice the amount of learning and growing up I did during my "wasted" years. I have made friends that I would kill or die for, met my fiancee, have a stable job that is allowing me to pay for school, and picked up quite a bit of real world learning/experience.
Edit: If I hadn't changed majors when I recently restarted school, I could be finished by the end of this summer term. I decided Political Science wasn't for me and changed to MIS.