The metric system is hands down a better system of measurement for everything you don’t measure with a tape measure. But if you use a tape measure how it’s supposed to be used, that’s precious little (and almost nothing automotive). If you’re using a proper ruler metric is easier because it’s 10 based. And if you’ve ever done engineering calculations with Imperial units then you know that engineering with Imperial units is an exercise practiced at the lowest level of Hell as the ultimate form of misery.
Ever heard of a slug? No, not the slimy animal thing in your garden, a slug is the unit of mass in the imperial system. I rest my case.