Bloody hell, ok, wish I'd kept quiet and read the other threads, sorry to rake over old ground.
Best of luck. I would encourage you to read these threads however.
You will learn about the danger of walking up a flight of stairs - and how its more dangerous than sitting on a 7kg piece of carbon on 23 mm tyres whilst descending a mountain pass at 35mph...
You will also learn about the dangers of walking around your kitchen,shed or hallway and usefully learn that apparently youre more at risk of head injury by getting a tin of baked beans out of the cupboard than negotiating a 20 percent slope on a ragged mountain path in Wales whilst riding a full suspension MTB.
You will learn that getting in your car and driving 1 mile to the corner shop at a speed not exceeding 22 mph will put you at far more at risk of a lethal head injury than descending the Ventoux at 44mph.
You will be shown lots of pictures of bashed in cycle helmets taken by real people on this forum- IGNORE THEM. They mean nothing as some freak of science actually means that their head should really have been yanked from their spinal cord by the mere presence of the the lid on their bonce and they are truely fortunate that it never happened...idiots....why...because A & E is full of people who hurt their heads as a result of wearing helmets.
No the world hasnt turned upside down....read on.
You will learn what compression is and people will insist on viewing your compressed helmet after you landed on it head first at 20mph.....they will insist that a 12mm compression of you helmet would not have hurt your bare skull in the slightest and your'e a nancy boy for even suggesting it might just have. Chuck some loony equation into the mix and you will be fobbed off with your tail between your legs
square route of fook all + e minus 6 g 9- minus some law of motion +6....see how I did that ? that means your helmet is a worthless piece of crap.
You will also learn that if compulsory helmet wearing is brought in a whole nation will get simply die off and disappear from the map due to being fat bastards .
You will also learn that to simply question these marvelous facts is referred to a "trolling", you might even be accused of stalking and probably be told to f^ck off in the process. You might even get a temporary ban for your troubles if your'e lucky.
The choice is yours. However if you want a fair debate about the subject on a level playing field...go elsewhere.