When you’re critiquing a hardware device, it might help to be factually accurate instead of basing criticisms on your own misunderstandings.
First, the Apple Watch easily lasts at least two days with headroom. Second, most of those extra hardware features — which you essentially dismiss outright — directly support what is likely the largest selling point and driver of demand: fitness tracking.
To be honest, at this point, the Apple Watch is to a wristwatch what the iPhone is to a traditional cellphone. Arguing that it’s not the best (or even a particularly good) timekeeping device isn’t particularly compelling, because such functions are secondary or even tertiary uses of the device. It’s about as silly as reviewing smartphones solely on their telecommunications stack, which is likely amongst the least-used features of a modern smartphone.
It’s fine if you really just want a timekeeping device, but your criticisms are going to go over about as well as someone wishing for a return of the Nokia candybar days.