There's definitely something to that. Once you've reached your lowest, something snaps and you realize that some things really don't matter. Like what others think of you.
But yeah on a more positive note... my introversion was pretty severe. The prospect of having to speak to anyone literally giving me nightmares. During waking hours, it was a root cause of the stuttering that landed me in speech therapy. In time, I found a balance between having a rich internal life and being sociable. In fact, I once loaned Devin my hat at a concert...
[youtube]Sd8mQhBefqY[/youtube]
I can appreciate that having people say "it will get better, honest" doesn't really help. In fact it can have quite the opposite effect when you suffer through rejection long enough. For me, the key was getting some perspective and learning to laugh like I actually meant it. For someone else, it could lie in simply admitting they like things their perceived social scene doesn't. Relax. Sit back. Bear in mind that I am a 6 ft 3 in tall broad shouldered, bearded, long hair and probably look way the hell sillier in those photos where I joined Dev on stage wearing a hand crocheted bunnyhat than you do trying to make friends.
p. s. If the video doesn't work, that's what I get for trying to link to youtube from behind a Firewall whose circumvention would get me banned.