It allows one to have a tassel to flaunt. It acts as a base frame for a turban. It finds a use for felt and colour dyes. It usually indicates that you are a Muslim male. You obviously don't encounter many summer days in the high nineties and low one hundreds.
Hats are also good for keeping one's bald spot dry in the rain.
It is a rare, stylish gem, a jaunty riposte to the diminishment of head-covering importance today. Put on a fez. Feel its style. The fez keeps us in touch with the history of haberdashery, keeps us aware of its ancient origins - something that the humble bowler, for example, cannot manage. And to be frank, it's the only hat you can wear with a dinner-suit.