Evolution is not impossible to prove. The science just isn’t there yet. If we were able to collect DNA evidence over thousands or millions of years and trace genetic lines, then you would see evolution is quite real. However, all we can do is base theory on observation. Fossil records support evolution. Hell, even the fact that there are different races of humans supports evolution. Modern genetics is truly amazing and if Darwin had the evidence that we have now, he would have been able to write so much more completely on the topic. Look at current research which is proving the genetic link between dinosaurs and birds. As the environment changed, animals adapted. Those with the best traits passed on their genes and those that could not compete died without mating. It is a cruel process, but that is nature. God is not a necessary component in the equation. Genetic diversity benefits the species because it increases the chances of an advantageous mutation to propel the species forward. It’s all simple biology and chemistry. Pretending that it doesn’t work just because you don’t like it doesn’t make it go away.