> Having to have everything scheduled weeks in advance is utterly exhausting and incredibly anxiety inducing to me. If I didn't already have friends I could do spontaneous things with, I'm not sure how I'd be able to have any sort of social life at all. I certainly am not alone in this, even if I'm a minority.

I feel similarly, but I don't understand how working at the office solves this problem. Are you saying that you mostly socialize by spontaneously going out after work with coworkers? Or that your you and your friends work in the same general vicinity, so you can text them near the end of the workday, and spontaneously go do something together?