I wore a uniform in South Africa (where it's the norm for schools), as do kids here in New Zealand (where I live now). No need to worry what to wear, whether it's cool or in fashion etc. You had plenty of time after hours, during holidays and weekends to express yourself through your clothes. But as so many people mentioned, it is a cultural thing. In the Commonwealth countries, that flows through to adulthood as well. Wearing the All Black Jersey (NZ), Springbok Colours (SA), Wallabies Jumper (AUS) etc gives alot of pride for the indiviadual and country! But Americans don't really compete in sports were the country and the jersey are unique. So it would make sense that it boils down to national identity and the way you grew up.