[throwaway07Ju19]

This is like saying you don't get why some men don't always wear condoms. For some, riding without a helmet is vastly more pleasurable and thrilling.

[Ididntdothis]

this is something I don't get. How is getting hit by bugs and rocks more pleasurable?

[cornstalks]

My favorite is getting throat-punched by a big juicy bug at 70 miles per hour. But yeah, getting one of those in the face (and near/in the eye especially) is something you do not want to happen.