To me, the issue is that you can’t divide days and years evenly in the way that one would want to with metric time, so you haven’t achieved true metric time. Y

To me, the issue is that you can’t divide days and years evenly in the way that one would want to with metric time, so you haven’t achieved true metric time. You’ve just achieved even 1,000 even units within a single day, so it’s not worth the inconvenience.