While many replies point out that you can charge at night, this would defeat one of the main reasons I use a smartwatch, which is to have an alarm that vibrates

While many replies point out that you can charge at night, this would defeat one of the main reasons I use a smartwatch, which is to have an alarm that vibrates to wake me up without waking up my wife. Other people use watches to track sleep. If you don't ever use it for either, I guess charging every night isn't an issue (though it means one more cable to bring whenever you travel). But for those of us who like the alarm or sleep-tracking features, that's pretty much a non-starter. I understand that they're getting to the point where you can charge just while showering, but aren't quite there yet.