It's _not_ convenient in many cases, such as if you're using an incognito/private window, or on a friend's computer, school PCs, don't have access to email, etc.
I much prefer the traditional username+password system. You shouldn't be memorising passwords anyway, use a password manager.
Password managers are quicker than clicking on links in emails, and if you're on a stranger's PC that doesn't have the browser extension, you can just look the password up in the phone app and type it in.
