Yesterday I passed a barbershop and saw ads on their wall outside of men with beards and short hair. It is a revival or saving electricity ?
Very variable, depending on style and your personal growth pattern. I have a small patch on each cheek that has to be cleaned off, but otherwise it doesn't require shaving. With a big beard you have to care for it like normal hair, though, with haircuts and products.
Buuut I do have the shave my whole head. Oh well.