i prefer metric for measuring length, but imperial for volume. ain't nobody got time to figure out how many damn milliliters equals a cup (237). then you have those damn brits and canucks using imperial gallons and they aren't even the same as our imperial gallons (20% larger if i remember right)! What the Fork!. let's not even bring up the celsius vs fahrenheit debate.
i don't even want to think about the math required to convert imperial or metric into a carlos.