I have asked a few questions that never received an answer. For some of those I have moved on, and don't really care any more, if I ever will get an answer. Should I delete those questions?
On the contrary, you would have somehow either solved those issues or found workarounds to get past them. If nobody has answered them till now, then you should post your own solutions or workarounds as answers. This will create value for the entire community moving ahead.
Stack Exchange encourages self-answered questions.