Tim Cook: The Apple Watch will likely require daily charging
Shock, horror. Tim Cook says we might need to charge our Apple Watch every day? What is the world coming to? But just who, with anything but the most tenuous grasp of physics, expected that the Apple Watch would not require daily charging? All those naysayers haven't got a clue. I will be happy if the Apple Watch lasts a day on a full charge, just like the iPhone and iPad.
Nightly charging is a good discipline and a good routine. I don't really like devices, such as the Kindle Paperwhite, that last days or even weeks between top-ups. At some stage you are going to be left high and dry without power unless you are meticulous in checking and breaking your routine to plug in the charger. Better to plug in nightly. Think of it like brushing your teeth.