Ok, first my views then a question:
I wear a helmet when I ride my bike. I do so because I think it may help if I crash. I don't think that head involvement is frequent in most bike incidents but I wear my helmet just in case. I know that bike helmet design does, in reality, not provide as much protection as most riders expect, but nevertheless, it has to help a bit, right. A secondary reason for using a helmet is that it seems to be expected, i.e. a part of the uniform. I plan on continuing with my practice; however (here's the question):
I just bought a recumbent tadpole trike. I really doubt that the risk of head injury is anywhere near that of riding a bicycle. Thus I am tempted to go lidless and let the wind blow through my hair. Anyone have an objective, well supported opinion that would make or change my mind? I have to say that this topic is just as contentious on the various bent forums as it is here.