I'm hard-core, hyper introverted, but when out and about, you would mistake me for a very extroverted person... I will volunteer, try to help others in need by listening (I'm emphatic too), but I NEED a lot of quiet time alone. Being FIRE'd allows me the opportunity to live my life in a way that I can avoid soul sucking crowds, heavy traffic, and follow the rule that "no" is a complete sentence, if I don't feel like doing something.
Introverts can seen as suspicious to many, if not weirdos... Like others, my give an eff field is barren, concerning this, and only grows stronger. Not to knock anyone, but early retiree sites can seem to have folks feel as if they are missing out, wasting their lives if they are not planning/went on a world-wide trip (with plenty of stylized, well selected photos to show) living a non-stop life of excitement, building a cob house earth ship in <fill in cool location>, sky diving, or doing a total home tear-down and rehab... Heck, I'm thrilled to fill my bird feeders, watch the regulars swoop in, and enjoy a nice cup of tea listening to soft music. I know I am an anachronism, out of phase with a lot of what goes for living now-a days, but I'm very OK with this.
The world (US) seems to becoming so coarse, so divisive, so unfriendly, so stratified, and so not what I value, that my innate introversion is only made that much stronger. It's like an old friend I can count on, and trust. Make sense fellow introverts?