IIRC, people have tried to create, and enforce, metric time in the past but it always fails. Basically it seems like that ever since the Mesopotamians invented base 60 mathematics for keeping track of time, some geometry, and related concepts it is stuck for that purpose because it really does seem to be the best number set for the job. It did not stick around for anything else though because it's basically garbage for those tasks. Base 10 works pretty good; it's easy to move around zeroes and decimal places, and since most people have 10 fingers it's pretty intuitive.