I don’t know, it’s not like it’s a secret what I’m doing in there. Going to the toilet looks very similar for most people I assume, so it’s not like someone with decent imagination couldn’t know what it looks like anyway. I don’t see the huge difference in whether the door is open or not other than politeness.

The reason I close the toilet door is mainly because I know others don’t want to witness me peeing. If they didn’t care, I wouldn’t care tbh. Everyone’s priorities regarding privacy are different, but I think for every person at least something feels private.