I wonder why we ask so many questions when we know that most will go unanswered. If our intent is to find immediate solution for all questions, then we are likely setting ourselves up for disappointment in multiple categories within our brain. As a result, we add a level of complexity to our own thought process. As for rhetorical questions, often those are questions from an outside source thus creating an uninvited imposition for the recipient resulting from an additional question to consider.
What to do?