Imperial made quite a lot of sense when numbers were small and calculations done without the aid of instruments: Using bases divisible by both 3 and 4 makes mental calculation quite quick.
Half a foot, six inches. Third of a foot, four inches. Quarter of a foot, three inches.
Sixth, eighth, and twelfth also go into whole inches.
For bigger projects, yards are fairly easy to decompose too, into whole feet and inches.
It's a good system for projects of human or slightly super-human scale using low resolution instruments and mental math. It's rotten for high precision computerized tasks of widely varying scales.
Easier than base 10?