Even the Romans saw pants as barbaric. But then Henry VIII came along. And his dick.
"This is the most elegant possible way to showcase a penis."
You see, Henry was extremely proud of his athletic build (at least in his younger years), and for him, pants were a great way to show off his manly calves. We'll admit Henry's "pants" don't look terribly masculine today (they're more like leggings), but back then, they were seen as a sign of his total authority ... mainly because they allowed him to sport enormous codpieces.
NOW YOU CAN'T UNSEE IT.