I am a quiet and "lonely extrovert". I love to listen more than speak generally speaking and I'm a good advisor as people feel directly intimate with my presence.
I am the one who will push things further to know what I call "inner truths". I generally don't attract many "extreme extroverts", my depth don't move them.
Also, let's not forget those "extreme extroverts" are most of the time very young or immature.
With time, they need to work on their energies so that they could channel them (it seems I know what I'm talking about!).
Let's break the préjugés that all extroverts are some shallow /always ready to party people, like all introverts aren't geeks, addicted to books or socio-phobic.
Like everything else this has more to do with self-consciousness

I know some introverts who enjoy going out regularly in pubs and concerts, whereas I do enjoy museums,
watching movies, and relaxing times.