If you're very happy with what you do and such, great, but don't shut college out based on that cost analysis. I finished my BS with $10k in debt and could have done it with none. Your college costs are not equal to your final debt. I did a community college AS degree and then finished my BS at a state school. (I did work, 20 hours a week at ~$6-7/hour.) There are many good schools, so you can filter them based on the best cost to education ratio and come up with reasonable tuition rates - just google it and see what you find. And college life can be a lot of fun depending on what you make of it.
I did a technical degree in engineering. Six years after graduating (B.S.), my salary equates to $35 an hour, I have health insurance, a month a year off, and other benefits, and in this career path, I expect my salary will double over the course of 15-20 years and then cap out. Today this buys me a nice new home, a nice new sports car, and I have enough money left over to take vacations and to save as well. Importantly, I generally like what I do at work every day and enjoy talking with and learning from intelligent peers.
If you're on the fence, remember that you can always do community college part time, right now, so you don't need to quit the job you seem to be happy with. It certainly wouldn't hurt you. If you don't like it that well, just finish the 2 year degree so you get something out of it and call it a day. You'll only have spent a few grand, you'll have learned a few things along the way, and from then on you can list a college degree if you ever need to find a new job years down the road.