This whole thread started and continues as US bashing. It has nothing to do with metric, that is just a tag.
We understand that the US promoting the imperial system is below its dignity as a country. And that the full adoption of the metric system will make people admire the US more.
I don't think we actually run around with posters proclaiming the benefits of imperial units. I don't think we care that much.
As to admiration by others, well, I don't think we care about that either. Does anybody seriously think the question of this thread was in earnest? Like they expected a scholarly answer? Bull twinkle, it started out as US bashing and continues in that vein.
But the good news is that we (I) don't give a sh**. We're not going to change so keep on hating. Me, I've been retired for 16 years and don't really concern myself with details. Life is good!
The US military adopted the metric system. The US military is what guarantees the freedom the US currently enjoys.
Well, 9mm was developed elsewhere but they still use .45 ACP pistols and 5.56mm is .223 while 7.62mm is .308, both very common rifle calibers. In fact, they were imperial before the military renamed them. Yes, there is a slight pressure difference between 5.56 and .223 but all common .223 rifles can handle it. In terms of 7.62, the military long range projectile is the Sierra .308 175 gr BTHP and while I don't use the same powder or charge weight, the ballistics are excellent. We're talking maybe 3/8" center-to-center groups at 100 yards. A different rifle with the 180 gr BTHP will put them in a dime at 200m - yes, meters. Not bad for an old guy who looks like a beached whale when prone.
See, that's another thing: How do we handle ranges in meters or yards? Well, we build scopes in terms of milradians and that is 1:1000 regardless of the units for small angles. No more of the "Minutes Of Angle" (MOA).
So metric units are F/REEDOM units. Fighting against them is highly unpatriotic and unamerican.
There are exactly 3 countries the US can rely on: Australia, New Zealand and Great Britain (maybe just England).
This is the quote of the year. I want a T-shirt with that.
If you get them printed, post back, I want one as well.
There's a reason I trust only those 3 countries and it has to do with personal interaction:
When I was working in Singapore, I would go to one of the islands off the east coast of Malaysia most weekends for a little diving. The American School provided the food and the Australian and New Zealand embassies would donate the wine in baggies (5 liter?). There were two divers (one from each country) who had, shall we say, extensive experience. Then we had our resident CIA guy (yes, really) and he was a bit odd. Turned my buddy's air off (instead of on) just before we jumped into a high current. That was fun! Never let anybody check your valve position!
One of the women was from GB and she was a marine biologist in charge of creating the aquarium on Sentosa Island, Singaore. Very bright! She knew everything that was happening in the water.
We all survived using Dive Tables in feet, tank pressure in PSI and tank volumes in cubic feet (nominal at max pressure).
Good times, good company! Those are the 3 countries I trust.
And the project I was consulting for was measured in metric. Somehow I survived...
As it turns out, modern silicon wafers are measured in mm. That seemed important at the time.