I wish they would. The obvious reasons aside, every time I watch american films and they start talking about temperature and distances I have absolutely no clue what is going on. Especially temperature. Recipes are also a pain in the ass when I was doing a course on nutrition and had to calculate calories and nutrients.
*The obvious reason being it makes sense for everyone to use the same system of measurement. And metric makes more sense intuitively than what america is using, besides it is the one most of the world is using.
*The obvious reason being it makes sense for everyone to use the same system of measurement. And metric makes more sense intuitively than what america is using, besides it is the one most of the world is using.