You’re not the weird ones. I used to have joint accounts with my then-wife, but I’ll never do that again. Mainly because I will never marry again (ridiculous concept if you ask me - the government charging you money so that they can approve your relationship is bananas to me, and then paying them more to dissolve it if it doesn’t work out), but also because I haven’t met many people out there who manage their own money well, so why would I ever put them in a position of control over the money I earn?