About the ony thing from that push in the 70s that stuck in the U.S. and sounds "normal" is the liter pop bottle. A liter of pop doesn't sound odd at all to me.
Glad you mentioned the Brits converted in 1965. I've been reading some British books from around WW II era that were using the standard mile measurements, and I wondered when they made the flip. Never looked it up because I knew that the knowledge would dropped in the CF Knowledge base some time!
Personally, I don't mind either way. I like our standard measuremnts that we use, but I don't trip out when metric is used either. It's easy enough to convert most of the time (kilos instead of miles, meters instead of yards, etc.). However, like you, I do prefer Farenheit to Celsius, but I can think in C terms if I have to do so when I travel. 40 is hot, 30 is nice, 20 is cold and 0 is ice!