the brits

I dont understand the British. They came, saw, conquered etc and left us with the metric system. So most, if not all the colonies are using the metric system. SO could somebody please explain to me the hell the British work in stones and or pounds . And how much is a stone anyway? The Brits also use miles instead of kilometers.

Do they know something we dont? Maybe the metric system is crap, a hoax, a farce. Or only good for the help :P