There is a difference between bicycles and motorcycles

I ride motorcycles too, and I got the best helmet I could find to protect my brain.

A motorcycle helmet protects as the shell and soft foam stops the outside to come into your brain. It works like a pseudo-skull, protects the thing inside and can be used again

A bicycle helmet stops by crushing hard foam and the outside layer of plastic helps by skidding across without gripping the road. Works like a disposable skull, only to be used for one bad situation and only one hit.