Sometimes they might be weird, difficult, boring or plain out unnoticed. I try to post interesting questions, also I don't make the titles long. When it's a personal question, I try to make it short too & clear no one wants to read something that makes little to no sense & makes your head turn. I honestly don't even see the ones that are unanswered but if I can not truly answer it and help I might as well skip it. Why am I going to post something that is fake to help someone or post something that won't really help.
I honestly ask myself this too. That's happened to me
Sometimes it's simply because the questions require more time, thought, and effort than most are willing to give or contribute. Other times, it's that people really don't know and don't want to share just saying that they have no idea.
I have days where I am more "chatty" than others. There are questions I honestly have nothing positive to contribute and so avoid them. Then there are others that are just really stupid. And then I really hate clicking into a question to find out they wrote a great big explanation about it and I simply can't be bothered to read it.