I wake up in the middle of the night sometimes, it’s dark, it could be 2 am, it could be 20 minutes before I have to get up; I can’t get back to sleep until I check the time. So I need a watch. And if I’m going to wear one, it might as well be useful for more than one thing.
The wHRM isn’t very good on the bike. But it’s nice to have a chart of how your resting heart rate changes over time.
The notifications (text, call, email, calendar, etc) are really nice. I thought that was a gimmick at first, but it’s really very convenient. You can’t reply to anything, but you can get the “I’m on my way” text while you’re in the shower.
I have mine set to buzz me 30 minutes before sunset. I hike a lot too; with thick clouds and lots of trees, that’s real handy.