Tim, I can't exactly agree with you on that on. The problem is the half-ass, "we're going to do it... or maybe not" thing they did. Half my car is SAE, the other is metric. Just pick one and stick to it.
Frankly, while our system works just fine, it's unnecessarily complicated. I heard a woman in Walmart the other night explaining to her son how measurements work. Child about six or seven. She's telling him there are 12 inches in a foot and three feet in a yard, etc. The kid had a look on his face like, "seriously, this is the best we could do?"
I'm all for us doing our own thing when it is better. But just doing it to be obstinate is kind of spiteful.