I was making £24000/y without any kind of degree or even much experience. I was lucky and got a really good job, where I enjoyed working and had a pretty good salary. Working about 6h a day, 5 days a week with a lot of spare time on my hands.
Non the less, I left it, and went back to school because I wanted to. Money isn't worth all, and going back to school has been one of my best decisions in the last couple of years. I might not be able to get that kind of job again but that's how it is. I might get something better, who knows.