The simple answer is creationists rely on straw men because they believe that every word in the Bible went from God's lips to Moses' ears, so Genesis is the literal word of God and there is no room for metaphors and symbolism. Since things like the fossil record and dinosaurs and man hanging out together don't mesh, conservative Christians use pseudoscience to justify their position.
The thing that I have never understood is why people want to commingle science and faith in the first place, as though they're interchangeable.
Science deals with that which can be observed and recorded. Faith is supposed the rest, right? If there was a logical way to either prove or disprove the existence of any god, what need is there for faith to begin with?
Anyway, I digress...as usual. Just know that if you are an Atheist, an agnostic or a member of another religion...I like you, respect you and will fight for your right to believe as you do.
That's the way it should be. And I try to return the favor.