They are mentally and emotionally incapable of research or scientific investigation of any kind. They must cling to their jungle theology, their pagan religious hallucination which is as anti-intellectual as a madhouse. No man with any degree of intellect would base his beliefs in human nature on an accident whose chances of occurring are one out of ten to the 46,000th power. No professional gambler on this earth would bet any amount of money on odds greater than 500,000 to one. It is not even a reasonable guess.
Evolution is a fairy tale for self-righteous people who like to justify their sins.
It wasn't anything different in 400 B.C. when the Greeks swore by it, and it isn't any different now. It is not a scientific theory. It is not even a rational theory. Its main characteristic is that it incapacitates its devotee from finding out anything about reality. Scientific progress is impossible where evolution is believed or espoused.