Never good to waste billions, my take is that if you want to talk confusion switch to metric. Those of us around when it was tried in the 70's refused to go along then, we flat out for the most part wanted no part of it and if forced on us now would hate it even more today. If you like it you are free to convert to metric in your head, I'm fine with that, but I bet you don't do it. My guess is that every one of you metric lovers get along just fine the way things are. Back to the billions, I would like to see the numbers as to where the $'s in waste come from. Lets talk money, what do you think it would cost to change every facet of our lives to metric. Every book, chart, map, speed sign & distance sign using our current method would have to be redone. Wasteful I think. Re-educate hundreds of millions of us, the vast majority who are long removed from school. In theory it may have been better if we had started with metric, but we didn't. I'm fine with that and guess that most people would agree with the status quo.