Someone’s never owned a boat.
There are 3 idioms that come to mind.
A boat is a hole in the water you pour money into.
A boat owner is only happy twice. When they buy a boat, and when they sell it.
“You don’t want to buy a boat. What you want is a friend with a boat!”
Even if you don’t use it as a password manager, bitwarden has an excellent pass phrase generator. The only annoyance is when I run into maximum password lengths at times.