With my bald head, at 6500ft in altitude, riding helmetless is just asking for sunburn, even in February. But If I'm working on my bike I'll take take a quick spin around the neighborhood to check my work, or I'll ride 2/3 of a mile to the store in street clothes and no helmet.

People always talk about that "wind in your hair" feeling, but the laminar airflow over a bald pate is most sublime.

Riding helmetless makes me feel naked, and like I'm cheating, so in that respect, I guess it's sexy.

But I'm definitely a helmet guy.