Landing lights and car headlights just don't need to be any brighter! They are too intense already. So use the technology to reduce power requirements and increase MTBF while maintaining an appropriate level of brightness. If you're looking at an excessively bright area on the runway, (or road) then the surrounding less-well-lit areas become all but invisible. An appropriate level of illumination allows adequate lighting of the area of concern without blinding oneself or others to an unnecessary degree.
And those blueish car headlights make me want to return the favor with carbon arc searchlights!
Just my personal opinion on the matter.