Evolution is the foundation for atheism and a materialistic worldview.
Unfortunately evolution can't explain how we got here and has no explanation for consciousness. If we really are just a random assortment of atoms how can we even trust our own thoughts? They would just be random events leading to a completely irrational world.
Neutral mutations may well be improving our genome. Definitely not eroding. That is how natural selection works. If its a beneficial mutation the organism will probably get to live longer or reproduce more. Otherwise, the reverse will be true, and most probably that mutation will vanish in a couple of generations.
@rmlopes how do you explain cystic fibrosis? There are multiple mutations that have lead to it and I can't see how it benefits the host. If you have heard of a proven way it does I would like know.
RE: How can we link science to religion?