You bring up that Imperial is "unscientific" though duodecimal systems do have the benefit of being divisible by 2, 3, 4, 6 and 12, So 12 can be divided into thirds easily, quarters, halves, three quarters... 10 does not quarter easily. Thirds, quarters and halves are units we find easy to work with. Though the duodecimal is a bit less intuitive when it comes to orders of magnitude.

The main reason decimal is some how more "scientific" is as we have 10 fingers. Here is an article on why it is not very scientific to use 10 as a basis of our counting system. It is a pretty Western based view too that base-10 is best, the Mayans were known to use a base 20-system, and the Babylonians developed a system using sets of 60.

Also, I would like to point out computers use binary rather than decimal, are computers "unscientific" for not using metric?