I think a lot of people just wanted to put in their hours and get home to their families. I love pool but never played with anyone on the table one floor down because it just wasn't a make-friends environment. I think I shot the shit with someone when I got into work a handful of times in the more-than-a-year that I worked there. Huge reason I left.
This isn't even coming from a social person. I prefer WFH. I don't particularly like going out. However, if I'm gonna be forced to be around people I'd at least like it to be pleasant.