This is probably a waste of time, but is this the summary so far:
a) Some people are saying you don’t have to wear a helmet to cycle, they’re not really going to make a difference in a RTA, but do in some cases. (and most of this lot say they actually wear them some of the time)
b) some people are saying that if you don’t wear a helmet everytime you get on a bike you are going to end up dead.
c) one person says they’d ignore you if you fall off a bike without a helmet on but really they wouldn’t but they might do, so respect them.
d) someone’s got no trousers on and is rubbing themselves.
e) everyone should give up and ride their bikes (after doing a full risk assessment and deciding on appropriate PPE obviously)