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!