It's all about evolution:

As the last of the real mutations in the human species, those with red hair tend to overcompensate in order to maintain their unique genetic presence:

I've observed unbridled ferocity in the face of perceived conflict, relentless hunting/gathering (especially chocolate), and strong nesting instincts. Our house has several well constructed piles of dense outerwear. Most appear to be gathered from local sources, and many of the pieces have their sleeves and cuffs rolled very precisely.

Kevin.