Anyone that goes to school especially college or anything in the sciences knows metric, metric is great and I do use it.
BUT as an American somethings I just want to stay the same and I want our current system to always stay. Forget metric on the construction sites, I never used it and in my shop I 99% of the time use the Imperial system, not metric.
America is not going to change to Metric and I do not want it to.
I noticed that the UK uses pounds and most there want nothing to do with the Euro, I think it is the same train of thought and believe it is more to do that the pound is part of their heritage than any economical reason not to change. The Europeans here can argue that point.
The Imperial system is part of our history and heritage and is easy to use. I don't want to change to metric and I don't want Spanish to be our countries national language either(which actually has almost made it through hidden in a couple different proposed bills!)
The mile is the perfect running distance and really would never want to see a 1.609344 kilometer race either!
Oh and they started much more than 30 years ago, I was learning it at least 40 years ago in grade school.