[Jtsummers]

And phones are for making calls with. So why do we need these fancy displays and fast processors?

A smart watch is a different category of device, even if it adopts the form factor, than a watch. Just as a smart phone is a different category of device than a rotary phone or old flip phone cellphone or feature phone. If you don't want or need the capabilities they offer, just don't get one. But it's rather inane to try and compare a smart watch and a watch and say, "Well, all I need is for it to tell time so this thing is worthless." For you, yes, for people who want the other features, no.

[threshold]

In principle I would agree. But even if we put aside the battery life issue, using those features on that tiny device is totally impractical. It reminds me of those Casio calculators with tiny buttons you needed to press with a pin. And no I won’t get one. I can go buy something useful instead.