measurement based on decimal is a great and weight in kg makes lots of calculations simple but after then its change for changes sake.
Engineering uses grams for small things, that works better as does mils for small volumes of liquid
Bur using thousands is much more useful in small engineering measurements as is PSI
The average forklift driver trying to make sense of the buildings floor rating kN/Msquared, looking for the weight in kN of the box he has picked up…not
What happened to BAR that very useful in the diving industry?