[bro-kaizen]

Wait really? It feels like almost every time I make a new account somewhere and drop in the 200 character high-entropy password that LastPass generated, I get a silent failure or misleading error message about "your username was not recognized." Then I try guessing which feature of my candidate password is pissing off the site: Is it the whitespaces? Special characters? Length?

This is particularly maddening because there are plenty of ways to accept arbitrary passphrases from users.

[jrockway]

You use 200 character passwords? I'm happy with 12.

[Springtime]

Obviously the longer the maximum available length the better but it does assume the host computer always has the password manager installed. I'd shudder to think how such a long password would be entered otherwise.

[Dylan16807]

Once you get up to a threshold like 128 bits there's no real benefit in going further. So 22 alphanumeric characters is 'good enough for anyone'.