What is the point of a cycle helmet? @Street-Hawk

What is the point of a cycle helmet? I am planning on doing a few cycle vids on YouTube. But one thing I will not do is wear a cycle helmet. Most reports seem to suggest they are not much use. To me many wear them just to feel safe. They seem to only cover the top of the head and one wonders if you did come off your bike if the thing would stay or move away from the head. I have fallen and been hit by a car and you seem to go on your side rather than head. I can see the needs if you cycle in woods in case you hit a tree. Or if you want to race it may make you a bit more streamlined. But one huge reason why I would not wear them is because I have time after time noticed that cars get closer to people who wear them and keep further away from those who do not. Presumably because they believe those wearing them will cycle safer and people like me may cycle all over the place. But this lady shows how daft many people are who wear them. She has the thing on top of a thick hat. So now it looks like it it perched on top of her head. One presumes it now is less use to protect her as one presumes if she fell the helmet would go to the side. Anyway. If you want to wear one. Feel free. But to me it is pointless just to make people feel safe. As daft as having children wear hi viz vests walking in the woods that I often see schools do. And in my opinion a lot of health and safety is more about not being sued.

See @Street-Hawk