I'm perfectly happy being a hermit at home. But once out with folks, I stay a long time. But then, recharge time.
This is me - I am a textbook introvert, but when I'm out with people, I can close down a bar. Part of this is that I'm almost *never* out with people, so on the rare occasions when I do venture out to seek the company of the Other Humans, my batteries are fully charged.
(Adult humans, that is. Nothing like spending most of your time with a three year-old to turn an introvert into a company-craving social maniac. I don't care how drained I am, if you want to have a conversation with me using complete sentences and not about how much you don't want to poop in the potty? PLEASE DEAR GOD LET'S HANG OUT RIGHT NOW WE CAN GO TO A PLACE WHERE OTHER PEOPLE ALSO ARE THERE AND TALKING TOO.)
Elsewhere on the internets (OMG! I KNOW!)
Else...where???
It's like your shields in a video game -- you have a certain number of hit points you can take (or other humans or units of interaction or stresses or embarrassments or whatever) before your defense goes critical and you have to withdraw to repair/recharge/whatev. And the thing is, some people can have pretty badass shields and go in swinging and not really care, and even really truly *like* the interaction, but when they reach that point, gotta make repairs. And some people don't have a lot of defense at all, but they're good at picking their tactics and engagements and make it through. And... okay, I'm a big dork, am'n't I?
I less than three this SO MUCH.