I freaking love wearing a wristwatch, but it's most useful for stuff when you're running around grabbing stuff trying to get kids out the door, or carrying a ton of stuff while setting up/tearing down a display for an event, basically situations not condusive to most smart watches where you have to do a gesture of some kind to wake the screen, you just want to quickly glance and continue

Also having been getting heavy into fitness (biking specifically but also some running and hiking), I get how cool having heart data and whatnot is, but ehhhh. Kinda not really necessary. I get handy GPS data from my phone and that's sufficient. I can't do anything meaningful with the heart data, but I can make very useful decisions with distance/time metrics! Or when lifting just knowing the weight I'm working with, how many sets & reps is more than enough

I was in the same boat until I started running. It's very nice to monitor heart rate so you can stick to a target heart rate.