The US is one of only a handful of countries that still use the confusing and cumbersome measurement system that we have today. Metric is the global standard and we burdened ourselves with the unnecessary step of converting measures to compete in a global market. This costs time and money.
Ask yourself how many feet are in a mile? How many ounces are in a ton? At that temperature (F) does water boil? Even most Americans lack a strong grasp of the arbitrary values that create our current measurement system.
Metric is the global standard. It is the scientific standard. It has proved to be superior in every way. It is time to catch up to the rest of the world.