As an introverted night person I really feel this lol. Also society absolutely does not respect any deviation from this. I actually tried it once a few years ago, I was out of work temporarily but I had enough savings that I was okay for a few months, so for the first month I just decided to recharge. Part of that was keeping to my natural sleep cycle, which is to wake up sort of late-morning-early afternoon and then stay up late to like 4-5 in the morning.

I had no work pressure to be up early, so it was only social. I told all my close friends I was doing this, and I was putting my phone on Do Not Disturb while I was asleep, so in the mornings I was essentially unreachable. Almost every single one of them said "Oh yeah no worries" and almost every single one of them ignored it completely and I'd wake up with a bunch of missed calls and texts. Some of them got properly mad. Someone called me and I didn't answer so they came over and started knocking on the door. None of it was for anything important, all of them were told I was going to be asleep.

It's the same for working from home. People just show up wanting to hang out as if you have the day off, or ask you to watch their kid or whatever. Same thing, you can say to them "I am working at my job, if I was in an office would you show up there for this?" And they'll say they understand, then a week or so later it's back to the same thing.

I realize this makes my friends sound horrible lol. They're not, I just meant to illustrate that society in general is really weird about anything that doesn't fit in the normal boundaries.