I find some people are assuming introvert/extrovert are the only binary at play, when I think it's that's just the X axis, and there's a Y axis of Backstage/Performer that's also relevant.
Introvert ------------- Extrovert
I'm an introvert (I need lots of alone time to recharge, I need to psych myself up for social things), but I love teaching. I like having a role, I like the attention. I also like how oddly temporary it is: the semester or panel is over, and next time it happens, I can try things differently.
My husband is an extrovert (has a few different gaming groups, always helping friends, just in general more social and that never drains him), but he doesn't want to be the center of attention. His job life is focused on helping others excel, and while he's had to learn to be more visible and give presentations -- that's what freaked him out more than creating something permanent.
Some actors of of course are known for the performance part, and they want to party every night (extrovert, performer); sometimes the production designer who keeps things on schedule and is great with work collaboration might also need time in slow motion, at home.
I came up with this "theory" when I was trying for an MLS -- lots of people assume librarianship is all about introverted cataloging, so there were leadership classes trying to encourage people to "embrace extroversion" -- and I got in discussions about how that may be too big a shift, but it could be viewed as "roles" with specific skills. People thought I wasn't an introvert because I was outspoken in class -- that was me being "On." I have depression (why the MLS was dropped), and it took me so much energy to have Teaching performance AND Grad School performance. Introverts may just need to save up our "social points", whether for performing or collaborating, and spawn them slowly.
(And there are a LOT of reasons for not going to conferences - especially if $/family are issues. It may matter for prestigious colleges, of course. But you may find you LOVE teaching -- lots of shy people can be great at that. Or you may be an OK teacher, and be a great backstage person, doing committee work and delivering the research. There is a need for a LOT of different neurotypes in academia. Just trust your strengths and all that. )