That’s not how privacy works though. You either have it when you don’t need it or don’t have it when you need it. You don’t just get it when you need it.
It’s not silliness to presume that you could eventually be in some situation where you need a high amount of privacy.
Maybe if you don’t actually participate in society, there’s some life circumstances that mean you would never need privacy. There’s probably like a hundred people alive like that. I don’t think they take taxis.