I turn mine off each evening before I go to bed, and turn it back on some time during the next morning. Saves battery power too.
Booting up takes a lot of battery power - I bet if you did airplane mode plus battery saver overnight, you would actually use less power than rebooting it. Try it!
I was alerted to a garage break-in because a push to my phone went to my watch, and then I called the police immediately.
If I (bizarrely) got a message informing me that a tornado was about to hit my house, I'd a) assume it was a scam b) have no idea about what I was supposed to do about it anyway. Hold on to something solid to avoid getting sucked away?