Same for the Swedes, but they get naked at the drop of a hat.

I just heard an echo in my mind of Tasha Yar in Star Trek: The Next Generation saying "Any. Hat." What is it about colder environments that the colder they are, the less clothing the natives wear? :D And I agree wholeheartedly with many of the assertions in the original post. Particularly the assertion that alcohol was distilled so that we Brits could build up the courage to reproduce. :)

Time to move to Sweden

I don't see naked people in Saudi Arabia.

That's because clothes are important in the desert. It's not intuitively obvious at first, but the right clothes shield you from the sand & sun, combat dehydration, and actually keep you cooler while also keeping you warm during cold desert nights.

Yes you are right. Apologies for snarkiness.

One observation though, even the aborigines in Papua would cover up their privates in little tubes or bits of hide. I thought this surprising.

I like this theory and shall adopt it as a perfect explanation until i hear otherwise.