Absolutely not true on the efficacy assertion. I've been run over while out training on my bike, went through a windshield head first. Without a helmet on my brain matter would have been in the lap of the driver.
I've got hundreds of thousands of miles in my legs and I won't get on a bike without a helmet on even going around the block.
On the infrastructure yes, agree. I'd be happy with simple stuff like ubiquitous bikes lanes and 10 foot wide shoulders...
I'm very glad to hear you're still with us and the helmet helped you.
Manufacturers however do warn that they aren't designed to mitigate dangers it vehicular collisions, and studies show that vehicle drivers are kinder to cyclists without helmets. Sources here: https://www.forbes.com/sites/carltonreid/2020/07/10/bicycle-...
I've got hundreds of thousands of miles in my legs and I won't get on a bike without a helmet on even going around the block.
On the infrastructure yes, agree. I'd be happy with simple stuff like ubiquitous bikes lanes and 10 foot wide shoulders...