Many, many people, for many, many years, have ridden bicycles (and even motorcycles) without ever donning any sort of protective headgear, and never suffered a mishap. But all it takes is one hiccup. It coul dbe cyclist error. Maybe a sudden unseen unexpected pothole. Or an animal running out ahead of your bike. From bump on the noggin to a cut to severe concussion to fatal head injury.
Here are a few helpful websites as we coast into Spring!