NASA might be the agency who most bitterly regrets not having paid more attention to units and gone metric earlier.

Maybe they'd have gone more times, more safely, or more quickly if they hadn't been befuddled by having to deal constantly with archaic and nonsensical imperial units?

Maybe, or maybe they would have struggled with the same challenges we saw Tupolev struggling with to produce the TU-4.

Practically, physical objects need built. If you're not doing it yourself you've got to work within the limits of your suppliers or push them.

I get your point, but let's not forget where most of the US rocket technology is coming from.

Two time world war champs!!!