Conversations I've had with other creationists DO disregard what we know about the universe. They would argue that the sun loses so much mass every year, and its radius would have been beyond the orbit of Jupiter if the universe were billions of years old. The simple answer is that Sol didn't always exist, but that notion isn't even considered.
Science is nothing more than the human understanding of the universe; people can be wrong, their understanding can be wrong, but science hasn't been proven wrong.
Evolution isn't even really debatable. If you want to debate evolution, start off with something easier. Gravity for instance, we don't even know what that shit is made of.
As for the big bang, the universe "being" after simply "not being", an omnipotent, omniscient spirit is a HUGE assumption, as is an afterlife.
And when the hell has god done something every time? I understand that you are trying to compare god to a repeatable experiment in order to satisfy the scientific method, but the scientific method has reasoning behind it; Occam's Razor. Occam's Razor is often misinterpreted as the simplest solution being the right one, but it is more accurate to say that the explanation with the fewest grandiose assumptions is probably the right one.
Hundreds of millions of people from various religions worshipping the same god as you is not proof, it is belief. Saying that your god is the only true god is like saying that most of the world, secular or otherwise, is wrong.
Worrying about the afterlife (punishment, reward) is no way to live, and as much as religions teach good lessons, doing the right thing is not restricted to those who believe.
Humans quantify, and categorize; we do so to understand. We have barely scratched the surface, and our current understanding of most of what we know will change as we learn more.