I'm glad to have read this, it gives me a little comfort to see that other people deal with same issues. Sometimes I just close the door for her when she's in the restroom.
I feel like a lot of these habits come from having lived alone for a while after leaving home. I have a lot of habits that I'm 100% certain I didn't do growing up because my mom would tell me not to. I would probably have kept them if I had started living with other people later. My mom on the other hand now does the things she used to tell me not to and I can't help but think that it is related to not caring anymore after living in solitude for decades.
Anyway, women however, I feel like they build these neurotic behaviors - like learned things that just stick with them forever. Like ouch, the pan was hot, don't do that again, but for EVERYTHING. So by the time they are old, just nothing they do makes any sense, to anyone, even other women.
This is, of course, not a universal rule. It's just an observation about tendencies.
One gender difference is that when these quirks are presented to men, they're a bit more likely to change to a more sensible method. Women tend to get annoyed about the male tendency to suggest solutions to everything. Annoyance can motivate stubbornness.