I just find the foot to be at an aesthetically pleasing scale to the human body.  Simply personal perception and preference. I don't like the yard or the meter as a basic unit and I could be quite happy with an "inch" that is a tenth of a foot. Since I was 15 or 16 I thought the metric system's decimal divisibility was a major plus, but have never come to be accustomed to using anything but meters and millimeters.

My preferences don't matter in the scheme of things and I, of course, have no idea what my preferences would be had I grown up using the metric system. But the USA is still largely on traditional measures, for better or worse. I carry some conversions in my head. 1m = 39.37". 1" = 2.54 cm. 10cm ~ 4". 1km = .62 miles. But I have never had the opportunity to obtain customary familiarity with "native" use of metric measures of length. Yet for small volumes ccs are more intuitive to me than teaspoons or tablespoons, etc.

The metrics I live with are truly bastardized.

As the Dutch said while fighting the Spanish: "It is not necessary to have hope in order to persevere."