haha, well our shoe sizes aren't actually in feet or inches, they're in some obscure unit. I agree, the European way of doing that makes the most sense.
I also have to admit that while I was growing up, metric seemed so much nicer, you didn't have to remember anything, 1000mm in a meter, 1000ml in a litre etc.
But since I've learned about the imperial I actually really appreciate for estimating stuff. If you imagine a small length, it's about 1 inch, my thumb is 2 inches. Sure, you could think of 2.5cm etc but its nice just to have it as a unit.
I only use it for estimating, whenever I do anything with pen and paper / maths, I can only work in metric, so then I convert everything over. 12 inches in a foot, 3 feet in a yard is just a tad annoying
Also, there really isn't a lot of point in converting everything over. I think the only thing that is still imperial is weight and height of humans, and miles as a distance in a car and pints of beer.
All blueprints and what not have to be in metric
When you buy things in a shop its measured in grams.
All the maths we do we do in metric.
So everything official is moved over, other than mileage though I suspect that's because it would be a pain to change over all the signs, and it doesn't really matter, so why waste all that money to change the signs?
It would be pretty tough to /force/ people to use metric for weight and height (personally I used kg for weight..) as it's just used day to day, and not really in an official capacity.