Why don't we see more people wearing red?

I own one red shirt (The 'Communist Party' shirt, which is great) and only wear it rarely. But I have a theory as to why it isn't a more common color to be worn. I would venture to believe that red clothing in sports is ok, but if you wear it in normal life you are more likely to be seen as brash and wild.

I know that the few people I know that wear red will actually wear a whole slew of ugly colors (lime green, neon purple) and not just that one color. Also, I must wonder about the surge of pink clothing we are seeing in American business.