Do you keep traditions of your country?

Do you have the national costume of your country? Do you wear it?
My opinion is: you should sometimes wear the traditional dress of your country. For example, on ocasions, festivals, cultural events and so on.

I am from United States. In my country the most common among men is dress pants, formal shoes, a button-down shirts with a tie.
Some other people also like t-shirts, Jeans and baseball caps or hoody.