They're already doing metric construction in government contracts. Check out the
NIBS "Construction Metrication" newsletter and some of their other publications. And besides, a half inch pipe isn't a half inch, and a 2x4 isn't 2"x4" anwyay.
One of their past issues had a story about the tricks they had to use to redo the Pentagon on a metric grid. Also, a lot of the high-end shingles these days are a meter long, instead of three feet.
Very true but I KNOW a 2x4 isn't actually 2x4 and a half inch pipe isn't half inch. It's not like I have to work at learning it.
Basically I'm too lazy to re-learn any of that stuff so by default I must say that it sucks.