I know both systems, and I definitely know which one is better, more versatile and far easier to use
I'd have rather we'd just changed, that this never-ending half-way mongrel of a system!
Which is easier to use is a bit moot, though, at least in some circumstances.
A dozen is divisible into an impressive number of integer divisions, as are hours, minutes and seconds; circles (gradians are a decimal-ish hybrid that even my spell-checker doesn't recognise).
But ounces, fluid ounces, pints (US and UK), gallons (ditto), stones, hundredweights, rods, poles, perches, bushels and the rest are, for sure, a nonsense today.
But I still work in binary, ternary, octal and hexadecimal and I still use degrees and nautical miles, which of course are minutes of arc on the Earth's surface.
I also regularly have to explain to Europeans that American billions are 1/1000th the size of European billions. In Europe they're milliards and a billion is a million million.
It's a struggle

It'd have been so much easier if we'd been born with 12 fingers of that shepherd on a hill had counted in binary.
