If you don't know whether or not you should go to college, then you probably shouldn't go to college. If you're already on a path, at the age of 19, where you've been hired at multiple places programming and you're capable of teaching yourself what you need, why would you suddenly stunt that organic growth?
The barrier to getting a job at an early age is much less often whether you have a degree and much more often whether you have experience. There are lots of people with the former and fewer with the latter.
Unless there's something you specifically want to go to college and learn, and it doesn't sound like there is, you should continue along your path.