The intuitiveness of the imperial units actually don't demand much thinking from my American pea brain: an inch is about the width of my thumb, a pound is about the weight of how much meat/grain I can fit in my hands, a mile is about a thousand paces - it's actually quite simple and intuitive, which is perfect for a dumb stupid American like me.
I can't imagine doing something like woodworking without my brainlet system. Inches are a nice "bite-size" unit that fractionates quite nicely for cutting wood. They don't make me think too much. In metric, my thumb would be about 2.53 centimeters, the kerf of my saw is 1/8 an inch, and that's like 253/800cm as a fraction - yikes! An inch is a good whole number to start working from.
And then like - what's a centimeter even? It's one hundredth of one ten-millionth of the distance between the North Pole and the Equator passing through Paris. Woah - get me outta here! That's just too much numerology for me. And my brain can't relate to or conceptualize that. Again, because I'm just so stupid, and American. I have to stick to the simple stuff: thumb -> inch, pound -> fits in my hands, mile -> thousand paces, gallon -> 10 pounds of water.