I say lets go with the majority on this one. Most of the world is metric. I would save myself alot of money when buying tools if everything was metric. I've owned Japanese cars and American cars (yes, Japanese cars are more reliable), and have to keep both metric and standard wrenches/ sockets. What a pain in the ass. Imagine my surprise when I came across a part on my American made car that wouldn't take a standard wrench... it was metric... doph!
Yay, a sensible person. Ignore Rendle, we actually have a bizarre mishmash of Imperial and Metric over here. He'd probably prefer it if we didn't have money in decimal still.
I say let's get hold of some really fucking big nuclear warheads, hide them in some major cities, inextricably link their non-detonation to my vital signs, and then use them as leverage to force the world to switch to the Furlong/Firkin/Fortnight system.