No Squeaks, currency didn't go decimal it went centigesimal.
The Metrics system was introduced by Napoleon who went mad and wanted to conquer the world.
If you want to copy a madman go ahead.
The standardisation ploy was just a gimmick. When the building trade went Metric in the UK they stopped making half inch copper tube and replaced it with 15 mm. which was the nearest equivalent. Buit when I took some of this to France to do some plumbing I quickly found out that they don't use 15 mm. they use 14 mm. and 16 mm.
It also leads to a particular brand of stupidity in which the users of this wonderful system don't themselves know what they are doing.
I bought a bottle of cider in Normandy which had 100 centilitres molded into the glass.