Why windshields are important (images not suitable for children or the squeamish)

On way back from the Big Bend National Park on the 118 going towards Alpine, at about 8pm when the sun was disappearing on the horizon, I just saw this black shape coming towards me.

Then I heard the impact and got sprayed with blood ...

Lucky I had the Touratech windshield extender, otherwise I would have it inside my helmet as I was enjoying the breeze with my visor down.