There are still different types of introverts and people are on different degrees of being an introvert. You're not just 100% or 100% introvert. You can be 40% extrovert and 60% introvert (according to a personality test) but still be labeled as an introvert. That's a very different introvert as someone who tested out to be 10% extrovert and 90% introvert.
What I'm saying is that not each and every introvert are bracing their being introvert. Some also likes being an extrovert sometimes. And some are so introverted that they feel like they are missing out on something especially socially so they would want to go out. Not every introvert lives under the basement and enjoying solitude. I mean, they usually do but there are also occasional cases when they want to go out and experience real-life interactions with other humans.
You can be an extrovert as well and still not want to go to the traditional casino and just enjoy a comfy night gambling at home. There are also extroverts that are in need of solitude at the end of a whole day socializing, talking, and dealing with people. They need to recharge, basically.
In other words, you really cannot just generalize people.
Actually, when it comes to personality, it is actually the dominant part of you that tends to come out the more most of the time, and this is the reason why based on some circumstances though, for those who have a very close personality between introvert and extrovert, they tend to have a switch in personality sometimes.
I totally agree with you on how introverts feel most of the time and how they tend to want to feel in certain conditions occasionally. I am an introvert, but in the past, once in a while, I have always ended up in a casino and still do my thing and live.
Funny enough, I still find myself making friends along the way but at the same time, since that introvert personality is there, I usually like keeping to myself once in a while, and I would say except I just feel like letting that extrovert part of me out, I would just rather want to be within my space but nonetheless, I totally understand all you are saying.