No, if god cared for us to measure things He would have made everything one size !

yes. tf is three-eights of an inch?

b-but then what would we call a quarter pounder?

the US legislation says it does but they have hundred years of transition phase

Affirmative

Probably. I'm not sure if I'd ever get completely used to them, but I think the system is more logical/efficient and it's also more efficient to be streamlined with the rest of the world. And it's also more efficient to only have one system in the same country.. here there's two. Take tools, screws, etc. for example, some of them are sized in imperial units and some of them are sized in metric. Then there's 2-liter soda bottles, etc. etc.
I think if Americans were rational they'd want to use the metric system and we'd be using it already.

We use liters for soda and kilos for cocaine.

It's not a must.

It's used by American scientists and drug dealers, and we all know those guys are commies. But soda is measured in liters. So there's that!