Why are passwords so difficult to replace!?

https://anchor.fm/s/5eab3ac0/podcast/play/39199779/https%3A%2F%2Fd3ctxlq1ktw2nl.cloudfront.net%2Fstaging%2F2021-5-8%2F2fef549c-ed1a-b1ce-4f51-60e3e34a98ac.mp3

What’s next for passwords and how can we phase them out for 2FFA?