I was reading a discussion about different HID lamps and I was wondering why would you use HID lamps in the first place?
Is it for fuel/energy efficiency?
Is it for their higher brightness?
Color of light?
They cost quit a bit!
EDIT: To make it clear, I don't see why one would spend that much money to replace their headlights with HID lights. I want to know what people usually want to achieve when they do this. Do they want to have brighter more focused lights? or they want to conserve fuel/energy and improve their MPG? or they just want to be cool?
In my opinion this is not an open ended discussion.