That's funny. How come mathematicians study it and write books on it? And they do not even care about biology or write about it in a biological context, biology just uses it. Some of the mathematicians might even be creationists, though such a fact would be entirely incidental. A more likely hypothesis is that you are ignorant of mathematics.
This can be demonstrated any number of ways using probability analysis.
In mathematics, you do not prove the "mathematical impossibility" of something with a "probability analysis". A more likely hypothesis is that you are ignorant of mathematics.
However, the simplest explanation I have heard, years ago, still holds: it's like believing that a tornado can blow through a junkyard of airplane parts and assemble a 747.
Apparently you never got past the trite soundbite to the part where it is regularly pointed out that this analogy is grossly flawed and therefore unrelated to biological evolution. You would be well-served to actually learn some mathematics and science rather than hopping onto the first bandwagon that plays to your personal biases and desires. Bad analogies do not trump either mathematics or science.
I don't know. Probably for the same reason that secularists of many other stripes do - because they desperately want it to be so. Judgement Day is simply too terrifying to contemplate.
I am sure you have read examples of the statistical improbability of even one amino acid being able to spontaneously form itself. Bad science and tortured logic do not trump common sense.