Perhaps you were not aware that there is an incipient Introvert Rights movement.
Before you ask, I have no idea what my Myers-Briggs type is. I've taken the official MBTI a couple of times, and I've taken various online tests based on the same approach to typology. Every time I take the test, I turn up at a different place on each type spectrum (e.g., one time I'll be "thinking," the next I'll be "feeling") -- except for one, the Introversion-Extroversion spectrum. I can be borderline S/N, T/F or J/P, but I'm never anything but introverted, by a staggering degree.
The Atlantic article linked above -- which I highly recommend, and which I can't believe took me this long to find -- argues that there is a cultural bias against introverts. Introverts can understand extroverts; in most cases, we have no choice, since extroversion is held up to us as the ideal which we introverts are failing miserably to achieve. I've often said (quietly, mostly to myself) that the problem is that most people see introversion as a deficiency -- as a lack of extroversion. But it's not. It's an entirely different scheme of brain-wiring. It's about how we take in the world and recharge our batteries. Extroverts do it through interaction; introverts do it through introspection. (Which would make a lousy bumper sticker for the Introvert Rights movement.)
Which doesn't mean we're antisocial or misanthropic (although sometimes we are) or that we don't enjoy other people's company. We just get exhausted by socialization. In a later interview, Rauch quotes a line from Waiting for Godot: "Don't talk to me. Don't speak to me. Stay with me."
At least, he claims it's from Waiting for Godot; however, I just looked up the text of the play online and couldn't find that line. Further research is required. Update: It's there, sort of, in the second act -- the actual line is, "Don't touch me! Don't question me! Don't speak to me! Stay with me!" Estragon says it. Thank you, alert commenter Rupert.)
Rauch goes on to say, "To me those words sum up the introvert impulse. We love people -- we're not misanthropic for the most part. We just can't socialize with them all the time. We want to hold their hand or hug them or just sit quietly and read a book with them."
Fifteen years ago, my big sister got married in the South in the middle of the summer. I spent the entire day in a black wool tuxedo, but that didn't tire me out nearly as much as having to play the part of Brother to the Bride. It was made clear to me that there were certain Expectations -- unlike the way I behaved most of the time, I had to be social and chatty and engaged and happy and help make sure the guests were having a good time. I don't think I had ever been more tired in my life than I was after that. After the reception, some of the other groomsmen and bridesmaids and whatnot were planning to hit a local bar for more merriment. I was exhausted, and begged off. One of the groom's friends looked at me scornfully and said, "How old are you again?" Asshole. I had pretty much hated that guy anyway since the first time I met him (my big brother, a near clone of me psychologically, felt the same way, and of course we expressed it not by getting in the asshole's face about it but by making incredibly funny and vicious jokes at his expense, quietly, to each other).
The asshole just didn't get it. His entire life, he had been rewarded for being a gregarious jerk, so the non-gregarious must be weak and worthy of scorn. (This guy was a Texan, which didn't help matters.)
My introversion probably isn't a surprise to most of you reading this who know me (most of whom are probably introverts, or lean toward introversion, yourselves). Although I think I can do pretty well in social situations -- I can fake it if I need to. One thing I've noticed is that I'd rather hang out in groups of three or more; when I'm not technically responsible for half of the conversation, I can hang back and add color commentary when necessary. ("Triangulation," I call this.) Which is probably not fair to the people who are doing all the heavy lifting in the conversation. But I like observing and listening.
Anyway. The Atlantic article has a lot of other great stuff I could talk about, but you should really just go read it yourself.