if you read the classical literature, it is full of harsh criticism against 'trousers'. in much of the classical world, the nefarious act of trouser-wearing was a deeply frowned upon sign of utter barbarism. a civilized person would not be caught dead in trousers.
we're all barbarians, now - the barbarians won, in the end. so, that may seem curious to us. but, it's an absolutely accurate depiction of classical views against trouser-wearing. it was entirely taboo.
but, the greeks had a lot of trouble expanding into russia, didn't they? you try living on the russian steppes, or even the german forests, in january, in that dinky little robe of yours, socrates. without a pair of trousers, a man will freeze his balls off in these climates. it was just an adaptation to the weather, these horrific trousers. but, yet, the greeks laid the wide russian rivers to waste as outside of civilization, holding to a no-pantsed principle over making the obvious adjustment to explore these rich lands. it was almost like the act of pulling the trousers on was one of defeat to barbarian forces - that to conquer this land, one must become a barbarian, by putting on those trousers, and it can therefore never be won to civilization. the greeks stayed to the milder coasts, in their robes.
this clothing thing - it's irrational, but it's well-attested, isn't it?