I don't think introversion/extroversion is a useful categorisation. Because I think it boil down just to what type of people or social situation one likes/disli

I don't think introversion/extroversion is a useful categorisation. Because I think it boil down just to what type of people or social situation one likes/dislikes. Introverts are uncomfortable with wider spectrum of people/situations, but they still do just fine/normally amongst people they like.