I know how to get to work, and yet I enter it into my satnav every day because it then avoids traffic.

TomTom had this solved eons ago - my TomTom 5000 from 2014 automatically sets destination as work when I get in the car in the morning, and home when I'm done with work. And it learns my schedule per day, so it doesn't do that on the weekends, or if I need to pop out somewhere at lunch. Such a simple feature from 6 years ago works better than anything that Google can seemingly come up with.

That's what Android Auto does in my car as well-- as soon as I turn the on the car on a weekday morning, it gives me directions & traffic to work. Ditto for the commute home.

Didn't Google spend billions to buy Waze in order to route people around traffic problems?

I use navigation primarily for the ETA.