I feel you. I've taught myself programming between 13 and, well, I'm now 23; so by the time stackoverflow came around I had figured out how to solve things myself. When I have a question, it's usually either opinion-based (bad fit for SO) or not a common question.
I'd say 1:20 is a good estimate if I ignore answers that didn't read my question (which is most of them), but indeed the facts disagree.