I have one. I used LastPass browser extension for Chrome which autofills my (unique) login credentials. This is incredibly convenient, but obviously opens up the possibility that if someone sits down at my unlocked computer, they can visit any site I have an account on and login as me.<p>Having 2FA within the Google Auth app on my phone prevents this from happening, effectively turning my password into a rotating 6 digit key instead of 32 character nonsense.