The only group in my experience that are completely ignorant always are the hardcore MTB lot. I suppose it stands to reason that a sport which is a bit extreme and devil may care and has a lot of bravado where they bomb down a mountain bouncing off rocks and kicking stuff out the way will attract, in my opinion, quite a few cocks. I dare say they'll then put their MTB's on the back of their Subaru Imprezza's, gangster rap/Euro crap music full blast and they wont bother indicating as they exit the car park.