It's worse than that. Some such people apparently think that they are doing a good thing for you by intruding in this manner; that you will appreciate it.
The road to the introvert's hell is paved with the extravert's good intentions.
(Note for the literal-minded: "hell" is also an exaggeration for effect.)
r/Fitness does a weekly "Moronic Monday", a judgment-free thread where people can ask questions that they would ordinarily feel embarrassed for not knowing the answer to. I thought this seemed like a useful thing to have here - after all, the concepts discussed on LessWrong are probably at least a little harder to grasp than those of weightlifting. Plus, I have a few stupid questions of my own, so it doesn't seem unreasonable that other people might as well.