Yeah. I don't mean to pick on extroverts at all, but. It's just that going out may help an extrovert feel less lonely, but for me it often results in feeling alone in a crowd, and feeling inadequate and incompetent besides, simply because I can't insert myself into social groups without a lot of pain and suffering. It's the thing of, I may be feeling lonely, but the alternative you are putting forth has turned out to be even more unpleasant than that 19 times out of 20.