Overall a good post untill the bit about climbing the stairs or drinking beer, nether involve combining your own actions with those of other road users travelling in some cases into three figure speeds, whether a helmet would help in a collision at over a hundred miles an hour I doubt, but the comparisons with drinking beer.......really.
yes really - think about it for a minute.
Beer drinking is associated very strongly with head injuries - yet anyone suggesting beer drinking helmets would be derided as an idiot. Your "combining with other road users" point is a complete non-sequitor. Surely what matters is risk of banging your head - considerably increased after drinking a lot of beer - especially in the company of others who've done the same.
Of course, I'm not really advocating any such thing - but logically perhaps we should. Either way comparison of risk in different activities is perfectly valid. I wouldn't be at all suprised if beer drinkers were more at risk of head injuries than cyclists - I dare say proven every Saturday night in casualty departments all round the country.
It might sound flippant or silly, but the point is a fair one
