I think that there are significant benefits to those who are naturally extroverted. I'd venture to say that most people are pretty good at "faking it" under certain circumstances. Then, there are the extremes (on both sides).

Those who cannot fake extroversion, like myself, struggle a lot with insecurity and social anxiety. I kick myself for being so rigid, but it takes a long time for me to build trust in someone. Only a small handful of people have ever gotten past my barriers. The sad part is that I have so many barriers set up between me and the world, I cause myself most of this misery.

The other extreme, natural extroverts. My bf is actually one of these people. {Before him, I seriously doubted whether there could be people this way.} Completely comfortable with himself and his abilities. Confident in everything he is and things that he's done. He's now physically disabled, but before that, he lived his life 100% 365 days/year. Fully into sports, parties, meeting others, working hard, etc. He knows a heck of a lot of people & instantly develops a great rapport with newcomers. {We are complete opposites!} Even though he's quadraplegic (sp?), he has not lost any of that ambition or extroversion. He amazes me!