> 1. It's founded on units that coincide with amounts human beings actually find convenient.
> Metric units are completely arbitrary and so less friendly than imperial units That's why very
> few people have one liter containers in their "cup"boards and why even the most SI friendly
> countries still drink "pints" of beer.
In today's world, both are fairly arbitrary (we don't ride horses or throw knotted ropes out of boats any more) but I agree that the imperial units fit more with humans. I've never been taught imperial units (grew up in South Africa, live in Australia). But, I think of human height in feet and inches (although I do metres just as well). Everything else is metric in my head. Including l/100km for fuel consumption.
And converting between things and relating things to each other is so much easier in metric. I know a litre of water or anything similar weighs a kg (yes, I know the kg is a measure of mass not weight, let's just assume Earth Gravity for now :-) ), I know a 10x10x10 cube is a litre (or kg).
But, I will take you to task on one point. The reason there are so few pople with "one liter" containers is that the only place on Earth such a bizarre thing exists is in the US where you prefer pints. The rest of the world uses "litres". Do you pronounce "liter" as "lee-ter" or "lie-ter"? Or is it part of the progression "lite", "liter", "litest"?
It's actually quite odd that you (plural) chose to adopt your own spellings for "litre", "metre", etc given that you don't use them and consider them foreign. Yet you've adopted your own spelling for them (maybe that's natural with foreign words or maybe it's just how American English works - "color", "thru", "lite", all very easy.