In other words: you believe such because you believe such
This is based on science. If we take a fertilized ovum, from any animal, to form a viable multicellular life form, that simple beginning has to systematically go through repeatable stages of building, that will be the same in all members of the same species. Many will even cross all species. Random would lead to mostly death and mutants. The latter is not observed as the majority of the data.
If you have taken any biology course, all the students can learn the same things because there is order. If it was random, no two people could learn the same thing.
Random is useful as a possible explanation for the changes needed for the theory of evolution. However, most of the random defects, require medical treatment in all stage of development. The healthy animal is based on order being followed.
The Atheist seem so used to repeating the party line, they have stop thinking. Even if we assume random for species changes, once this change is set in stone; new species, life defaults to repeatable ordering since this promotes the best health and viability outcomes. We go to the doctor when order is upset by any number of internal and external perturbations that start randomizing; bacteria, virus, cancer, bone break, etc.