The problem with Google's passcodes:
- I don't use Google account on my phone. In a rare occasion I need to access gmail outside of my home, I just log in via a browser, either on my phone or work computer or wherever.
- My home PC has no authentication whatsoever. The three physical locks on my apartment's door is the access control. Couldn't lug it around for authentication, anyway.
- I have no other devices that could be used for this passcode thing, and my phone is usually laying around somewhere, probably shut off with empty battery.
In fact, I have not bothered even with 2FA for google accounts. At this point these are just "garbage collection accounts" for spam and youtube subscriptions/playlists, anyway.