That doesn't have to be as annoying as it sounds. If you use Gmail for example you can login via Google Sign-In, and later a system like that can support generi

That doesn't have to be as annoying as it sounds. If you use Gmail for example you can login via Google Sign-In, and later a system like that can support generic OpenID. Also, once logged in the site you logged into can save your session – it's not like you log into pages every time you use them. It kind of moves the problem, yes – instead of securing password on each and every site you only have to protect your email password. But that you do have to do already, so imho it only removed one problem.