WHY DO SCOTSMEN WEAR KILTS?
If you've ever looked at ancient Egyptian carvings, you'll notice that the Egyptian's wore something akin to a kilt. Steve Martin even wore one as King Tut. The kilt is an adaptation of the oldest form of clothing known to man.
The reason Scotsmen still wear the kilt is because it is a source of pride. The kilt displays a Scotsman's tartan, the color of his clan. Because of the Dress Act of 1746, Scots were banned from wearing kilts or tartans and thus it became a matter of pride to wear them.