Why is the USA the only country who doesn’t use the metric system?

I’m old enough to remember when they tried to convert us to metric. I can tell you why.

People tried to force it on us and we don’t need the metric system for daily use. Trying to force people to use it isn’t going to work. Now, personally, I’d prefer if measurements on rulers and in cars were still given in both systems.

Metric advocates tend to be smug and insulting towards anyone not using the metric system. I have seen this myself more than once. Calling a whole nation stupid because they use a different but functional system of measurement is hardly a good strategy for converting them to your system.

I learned the metric system in school. I understand that the metric system is superior in many sciences. I have strong interests in anthropology. And here I am at 55 and I have never, not once, needed to use metric. Bone measurements are often given in metric but it’s not such a big issue that I need to wholly convert to metric.

My question is, what’s the big deal? Is the metric system a religion? I’ve seen evangelical Christians less intent on converting people. Why?

base 10 is way better than whatever the fuck cups, pints, ounces, different ounces, and so on are

Functionally, what’s better about it? I mean, really.

way easier to learn/remember or to convert things in your head. less chance of getting it wrong.
but once you’ve spent years and years getting used to the mess that’s US customary measurements, you’ve already put the work in, so metric doesnt look that much easier (and if you’re unfamiliar with it, will look downright harder).

Is it that much easier? I think y’all make US customary out to be more complicated than it is.