I ended up switching to Garmin to get away from the smart watch features, and I got addicted to closing all 3 rings each day, to the point where I would lower the targets to reach em. I find not having the rings, but a simple steps target and a weekly intensity target much healthier.
I switch back and forth, but usually get frustrated either at the iPhone's keyboard, the in ability to swipe away notifications when they arrive or how difficult it is to cast to our smart speakers (we went with google nest as I couldn't find a good homekit enabled video doorbell at the time). with android it's just easier, and Garmin's work properly in terms of being able to reply to messages etc. also battery. Having said all that I have a pixel watch 4 on preorder.