Given all the drawbacks of passwords there isn't really an alternative to passwords for me. For example, what do you do if you only have 2-factor auth and you lose access to all your devices/docs? e.g. when you are on holidays?

PAKE supports in the browser would be awesome. Some applications for it:

https://www.researchgate.net/publication/325142389_AuthStore...

(swap the proposed PAKE for OPAQUE)