The same applies to many things, my concern is that you seem to have an almost evangelical faith in helmets and yet you seem very vague about the evidence you base these statements on. You are also very keen to avoid enlightening us as to where you get this insight from...... asking whether you have gained your undying faith in helmets from RoSPA the College of Emergency Medicine for example (or any other organization /body) is hardly "off topic" or "muddying the waters".
If you are uncomfortable being asked what you have based this evangelical faith on, or afraid to admit that you cannot substantiate your claim then please just say so.
You want me to run research before wearing a helmet, i dont want to as i am happy with my decision based on my own experience. You seem to spend alot of time trying to prove to me i shouldnt wear one.
I am comfortable with my choice. You seem really confused about yours, you have read up alot and spent time trying to justify not wearing one. If i were you i wouldnt worry so much, dont be scared of being criticized for a decision you make, have the confidence to make your own decision without always having to rely on reports and investigations. You could end up never making a deicision or relying on your instinct if your not careful, if this spread into your professional life you would struggle to complete anything.
Take care mate, and as i say dont worry