So, the Muslim son asked his Muslim father;
“Father, why do we wear these caps atop our heads?”
And the father answered:
“Because, my son, they protect us from the hot desert sun.”
“And father, why do we wear these flowing gowns over our bodies?”
“Because, my son, they protect our bodies from the searing desert heat and retain moisture to keep us cool.”
“And, father, why do we wear these cloth coverings for our feet?”
“Son, it’s to keep our feet from becoming blistered from the severe heat generated by the desert sands.”
And finally:
“But, father, what are we doing in Dearborn, Michigan?”
LOL
That’s a rehash of an old joke, except it was a black guy talking asking God why he gave him black skin, kinky hair and put him in Harlem.
Good point Homer (though in jest) — when you are in desert climates, the flowing jellabah in white cloth reflects the heat, and the loose nature means you get breeze. It is the right outfit just as the Greeks wore tunics and the Romans togas.