Anyhow, I think the simplest means of advocating the metric unit of measurement is this:
Using just your head, what is 16.2% of a meter?
Using just your head, what is 16.2% of a yard?
Seriously? What the heck do you do for a living that requires you to figure out the percentage of a yard/meter?
I've walked this planet for nearly half a century, and I have never, not even in a word problem in math class, been asked to make such a calculation.