I used to be a creationist (obviously, as a JW), and used to sometimes argue the creationist side on internet forums.
I think religious people expect an all encompassing, dogmatically True answer from science - or, nothing at all. Because that's how it works in religion. Without the evidence. Just like some JWs who think about leaving try to find some other religion that have all the answers, because that's what they're used to. But science isn't complete, and will never be; there's always something new to discover. And that's not a bad thing. That said, there are quite a few things we can say with some confidence that we know about the universe. Like the universe not being somewhere between 6000 and 50.000 years old. Or that humans and animals have only existed within a similar time frame. The alternative is that we are deliberately deceived by some deity, but at least the biblical God supposedly "cannot lie".
It's important IMO not to make it an 'either or' question, because evolution theory simply ties together all the facts about life we see in nature. It's up to religious people to update their "map" to fit with the new information about the "terrain". Evolution theory is not "an atheist belief".
Evolution theory does not start with the beginning of life from lifeless matter, and definitely not with anything else not related to biology (like the big bang, planet formation etc.); it describes changes seen in the inherited traits of populations of living beings over (a huge amount of) time.
Evolution theory doesn't have all the answers (but more than many think), but overall it is what best describes what we find in nature. It is still under development as we find more facts, and DNA research and more fossil finds add to the stack of facts that point in evolution's direction.
I'm fresh out of reading Dawkins and Behe... and Behe makes some points that seem irrefutable about ID... while Dawkins just bashes everyone who doesn't agree with Darwinism...
Behe is a "poster child" for ID, and is also often used by other creationists, but he does in fact accept common descent; that we share a common ancestor with apes. As for his points (irreducible complexity for instance), I have seen most of them been refuted or at least explained by other scientists. Richard Dawkins has become more of a "poster child" for atheism, but to me he's more important as a biologist. I don't agree with everything he says in his books, but I do overall.