I've seen a lot of questions on Mathematics Stack Exchange where none of the answers have been accepted. I think that sometimes people are unaware of what assumptions they are implicitly assuming, and cannot be taught how to make it clear what their question is. I believe that sometimes when somebody can't get an answer that solves their problem, they can be nudged to resolve their confusion all on their own because that's what they're interested in doing now that they could not get an answer that resolved their problem. Only after they solve the problem themself will they have a real feel for what they were missing earlier. Another person's answer explaining what they are missing may not always give them a real understanding at first. I believe that sometimes when somebody derives a contradiction, it gets them to learn how to think of things another way and come up with an explanation of how their past assumptions could be false.
I think it's a win win. Sometimes the person who had the question might easily get nudged into solving the problem themself becuasue they have their own personal interest in coming up with a solution and thinking of an explanation. Once they already came up with the explanation, they might want to write it down in an answer and explain what their confusion was and their resolution to it. This in turn will provide valuable information to some of those who read some of those answers. They will learn what types of confusion people tend to have and how they resolved their confusion. Researchers could then use that information to research how to educate people if they wanted to.
You may think this isn't a very good question because it's about whether we should do something. It may be worth considering taking the time to figure out your opinion on the matter and write it in an answer because there is another already existing Stack Exchange question https://matheducators.stackexchange.com/questions/11813/should-we-program-calculus-students-like-the-physicists-seem-to-want-us-to about whether we should do something. It may be worth considering allowing some questions of that sort because some people may be happily willing to put up the effort of researching their opinion on that matter and writing an answer that expresses it.