All of our human measurement systems would be much friendlier if we had a consistently applied base 12 system. Breaking things into 3, 4, or 6 parts is much more common than breaking them in fifths. Along the way, we could mostly straighten out our measurements for dates/times, angles including longitude/latitude, etc.
(Though I must say, I’m also partial to the Babylonian base 60 system.)
(Though I must say, I’m also partial to the Babylonian base 60 system.)