Shack Opinion

I'm trying to decide if I want to go back to school or not. I dropped out of school as a senior 30 hours short of getting my BS in Computer Science. This was 5 years ago. I mostly dropped out because I was burnt out with working full time and trying to balance my school work. Fortunately I already had a lot of work experience with all the apps I had built in my free time. I ended up getting a job as a web programmer doing php/mysql making 50k a year. Since then I've got numerous promotions and raises and now I'm making 70k+ a year as a Software Engineer. I just don't know if it's worth going back to school. It pisses me off that I spent so much of my own money on an education and have nothing to show for it. I thought about night classes, but most of the classes I have left are high level computer science courses that they don't ususally offer. Plus I think my GPA is too low to transfer into the University of Texas(closest college) Comp. Sci department.

What do you think i should do?