Sounds like a bad idea to depend on your Yubikey. I only know my master password for Lastpass which is a kind of random 14-16 char long and complex. I type it

Sounds like a bad idea to depend on your Yubikey. I only know my master password for Lastpass which is a kind of random 14-16 char long and complex. I type it once each morning and it goes fast to type. With that I access my other 334 random generated passwords. But I do know my password for email just in case.