[I'm a woman.]I've used this for years and will continue to use it. You are not limited to one generic cut. If you want it really short, like if you're a guy, then you need to buzz it with an electric clipper. The rectangular extensions are modular, they stack and come in a few sizes to accomodate different hair lengths.

Why I like it:
-I can cut it ANYTIME. It only takes me 10 min. or less. I don't have to pick up the phone to make an appointment, wait and read crappy old magazines on uncomfortable chairs. But if that's how you like to spend your time, go right ahead.
-I can be sure that it comes out exactly the same each time, if I wish, plus the hair on the sides of my head are ALWAYS cut exactly the same length.
-I save TONS of money. The unit initially costs $80 [I paid $60 a few years ago and use my own vacuum] so just a few trims and it's paid for itself.

Laugh all you want, but I get to spend my time and money in persuit of my own interests.

It's an old carnival BB gun from an amusement park in the late 40's to 50's. A steel tube of BBs are dumped into the barrel. Note the hole in the tab at the end of the barrel. This secured it to a post anchored into the counter to keep it from being pointed at anything other than the target area.

Whaddya think? Am I right?