Joint Accounts

I've noticed that I know a few people who have joint accounts.  I'm not talking about savings/checking accounts, I'm talking about shared email and Facebook.  Am I the only one who finds this weird?  I would never dream about having a shared email account with the hubster, let alone Facebook.  Email is just too private to share with another person.  I guess some could compare it to a land line at home, but the hubster's email is too disorganized with a billion unread emails.  That would drive me nuts.  I think I'm too independent to share something like that. It's like sharing the same toothbrush or something.  It gives me the willies.