I find that discussion really interesting here, lots of good arguments, but very academic.
We are talking about an error that amounts to the thickness of an airlinerīs fuselage after all.
Flying to Russia or China, the conversion to Meters produces way bigger discrepancies, yet the Chinese still incorporated RVSM.
I donīt understand why I should confuse myself with a unit of measurement that is used in only one of 190 countries on earth, when the benefit has no practical meaning to me.
Iīm always puzzled by that strange kind of patriotism when it comes to aeronautical standards.
We have a little bit of everything anyway, (ft,m,kts, etc..), why do Russians have to stick to Meters, Americans to Inches, French to flying odd levels westbound?