As an introvert, I like a little bit of socialization throughout my day. Too much is certainly draining, but if I worked from home I would become a hermit and have an unhealthy amount of socialization.

Exactly. I feel like as an introvert it's more important to be in an environment where you regularly meet people since you won't do it intentionally. Socializing skills are important for the vast majority of people, the only exceptions being celebrities like Linus who have lots of people seeking them out.

I am an introvert and occasionally miss the forced socialization of working in an office. After long periods of working from home, I'm usually ready for some office work.

I personally miss some human interaction after long periods of time at home, but not office interaction. It works for me to break up my schedule to socialize with my wife, friends and family to properly quell those feelings.

I work in a creative field (commercial post-production) so those social interactions at work often influence the work we do individually. It often starts with asking for a critique on what someone is working on or help solving a problem that rolls into a social conversation or vice-versa ("since you're here, take a look at this").

Bouncing ideas off co-workers is what I miss most about working in an office.