Never really understood why anyone cared about what set of units a person uses. They're just numbers. As long as the person using them is consistent, it doesn't matter which are used.
As a child of the 80s I was brought up using both imperial and metric numbers and like most of my generation I just automatically convert one to the other.
I suppose the other part of that is base 10 is a poor fit for a world dominated by technology, which prefers base 2 or 16.
There's a fair argument to be had that base 10 is the mathematic language of simpletons who can't count beyond the number of fingers and toes they usually have. Of course imperial is even worse.. because it uses random quantities as it leaps from one measurement to the next.