I'll never understand why anybody cares why I take a helmetless hour spin around the lake after a race, shopping trips with my grocery/beer bike, or early morning rides when absolutely nobody is around. Like in the Jobst Brandt thread I explained last season some loser, and total stranger mind you, actually had the nerve to ride up to me on one of my lake spins wanting to debate why I'm without brain bucket, needless to say I almost backhanded this fool right off his bike. Have no respect for the helmet Nazis, I'm actually with helmet most of the time is the ridiculous thing.
I also run red lights, especially when I'm training out past the suburbs. They're actually pushing for a law here in Minnesota to allow, you heard me,
allow, make legal for cyclists to run lights and stop signs at low traffic levels. Amazing if it passes, but It wont change the way I've been riding for over 20 years. Although Flyor64 is absolutely right about groups hogging the road, which is why I'm adamant about giving space to motorists. The law here is 2 abreast if there's no shoulder.
All being said, I don't really give a flying you-know-what about what people think how I ride, and I don't need to justify my non-helmet wearing in certain situations. Talk, rave, cry, rant about it here. Whatever, to each his own I say.