I feel most Americans don't see Metric being used in the the U.S. because we don't need it.
In science though everything is metric & we embrace it.
They teach us metric in school. Plus centi, milli, etc. Just the basic unit headers that you see.
I only see metric used in machine shops & rarely. They usually use decimal inches. Things go Metric when it's in a lab & under a 1/32nd.
I also believe rough measurements are easier. I know my foot is 12 inches or a foot, I know my average lunge is a hard long.
Even when my foot was 11 inches I could rough the math out.
28 centimeters is a bit harder to multiply mentally (No calculator)
Plus I have four fingers & a thumb. My fingers each have 3 segments. 12 total.
Other things are multiples of 2.
What about our clocks!? That's base 12. It'll never change but it's fun. Here's a fun video on it: https://youtu.be/U6xJfP7-HCc
To each their own