So that you can contact the person and kindly ask them to change their password so you can use it.

That's my email, you can have it I'm not using it anyway just make sure you delete the porn.

if you think this hypothetical through, you would get a situation where everyone has a unique password, that is really random because you don’t want someone else to accidentally get the same one.

in the end, it might actually be more secure than the current system where 30% of all users use Password123!

Not so hard to create a strong password

https://neal.fun/password-game/

There’s a major problem with this approach.

If the number of users gets too big, it will take too long to search for each user’s password.

The point is that they shouldn't know the password to compare it to another user's password. So at best it is not salted and at worst it's not encrypted.

Passwords are anyway obsolete in the near future, with big corps and their Quantum computers. Then are only physical tokens a valid methode.