My experience has been completely different from yours. I grew up in the Netherlands, but I went to a US Department of Defense Dependent School, so my education was through the US System (although better because of had DoD money!) Anyway, when I went state side for college, getting used to Fahrenheit took forever. Celsius is easy.
Below 0, it’s cold, it might snow. 10-15, wear a coat. 15-25 - Awesome. 30 or so, way too hot.
Fahrenheit has too much range, so it’s harder to parse. Is 68 degrees cool? What about 75. When do snow happen? Somewhere below 32. There are actually too many points, and so it becomes hard to use (in fact, in statistics, it’s found that having more then 7 options on a scale decreases accuracy. Humans just aren’t that specific).
Cooking in metric is also just easier and makes sense. Table Spoons, Tea Spoons, Cups and Pints. Who the hell needs pints? It’s just 2 cups. All the ingredients are in 2 simple metrics, milliliters or Liters. (We have dL, but why bother).
Cooking is easier. 250 mL. Need to double it, 500 mL. Super easy.
Alternatively though,- 1 pint, doubles to 1 quart, or halved to 1 cup. Perhaps you just use 2 pints or half a pint instead, but your measuring cups will probably not show the information that way, so instead of doubling a number, you end up using different types of units doing a bunch of mental back flips to get the right number. Metric is easier, because it goes up by 10s or 100s, just like money, just like counting.
But that’s because of my upbringing. Everything was in metrics. No Yard sticks, just a meter stick. Kilometers instead of miles (Cross country course in High School was always 5 km, or 3.1 Miles but km made more sense). Recipes were in mL or L, and sold as such. 2 litter bottles of coke. You got coffee in a small cup because that’s what the served it in at cafes (and it was enough, since we practically drink water here in the US).
I argue, @Tin_Wisdom, not that Metrics is strictly better though (okay I do argue that, but I concede that I might not be 100% correct) but that a person’s upbringing and what the directions call for has a way bigger influence on what is easier to use. Everyone brings a lot of bias when it comes to the system they use because they know that system.
It took me a few years to get used the Empirical System when I got to the US, and I’m no slouch when it comes to math. I still prefer to have information given to me in Metric when possible, but if everyone in the US is talking Miles and Feet, you just go with it, because doing otherwise would just be confusing.