For me it's a mix of 2 things: 1. If I do end up traveling, I now have to deal with remembering to charge my watch while sleeping on the airplane or something

For me it's a mix of 2 things: 1. If I do end up traveling, I now have to deal with remembering to charge my watch while sleeping on the airplane or something 2. If I go on a camping trip, extra long hike, etc, I can end up with a dead watch (12 hour hike with navigation, early start, so I don't get my morning charge, etc) With my Garmin, I just charge it once a week or so, and all is good. I do think it comes down to what you're looking for though - mini phone strapped to your risk vs adventure companion.