[cornelis]

some people not want life to be the spontaneous product of physics and chemistry exclusively, but they absolutely insist that it not be.

Why do suppose that is?

[LibertarianSchmoe]

I can only speculate, but I guess it's either a percieved threat to a particular philosophy, or it's that all-too-common trait of not wanting to be proved wrong about something. That's the danger of certainty.