Nobody should use biometric ID systems. Resetting my password requires plastic surgery? No thanks.

Involuntary compliance [1], false positives and false negatives are all big, unsolvable problems with biometrics.

[1] To some extent, all authentication systems are vulnerable to legitimate users acting under coercion. https://xkcd.com/538/

Biometric systems take the choice of compliance away from the user, they can physically force you to unlock your phone. With a password you have a choice not to comply even in coercive scenarios; you have the option to say "I'm willing to die from getting hit with the wrench before I'll give up the password."