>60 offers a greater variety of commonly-used divisors than would 100. 60 can be easily divided into halves, thirds, quarters and fifths.
>
>60 = 2*2*3*5
>100 = 2*2*5*5
As long as we use decimal numbers (base 10), then any measurement system would also be simpler in base 10.
Now, base 10 doesn't have any inherent advantage over other systems, but changing to a different base (some power of 2, or some number that is easy to factor such as 6, 12, or 60) would be even more tricky (in the sense of discarding centuries of tradition) than changing the time system to decimal. Or to whatever base we decide to use.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)