Isn't that the idea that all the Q&A sites stem from?
I feel roughly the same as you. But I have actually asked questions both at StackExchange sites and Quora (and answered others in return for the help I received). And it certainly has it's uses to me.
Admittedly, this approach has the downside of not producing something that others encountering the same issue can find by Googling. Unless I blog it, of course.
S.O. search results have been useful in refining my understanding of a problem set, but it's rarely been useful for a direct answer. When it does provide a direct answer, it's generally about simple stuff that I'm dabbling in, such as Python syntax questions.