I see that the "HUGE problem with creationist thinking" in the opening post of this thread was that there is no way to determine which creation story to teach. The thread evolved to showcase each poster's main difficulty with creationist thought.
My main problem with creationism is the compulsion that creationists both suffer and seek to impose: that their story of origins is literally correct and must be taught to children in public schools. I don't really care about it otherwise. I don't care about the difficulties presented by debate with creationists because there is no debate with creationists.
Whatever line of approach a reasoning person takes, the reply remains essentially the same--God showed me the way and told me to spread the word by any means necessary. Creationists are the jihadists of discourse, and I just don't care.
The creationist approach to debate is repetition. Creationists reject science, and reason won't persuade them to do otherwise: the irony of rejecting science's methodology while enjoying its benisons is matched only by possessing an evolved brain that they refuse to use for anything other than superstition.
But I don't care about that, either. My problem is not with creationist thought, but creationist action.
I can sum up my HUGE problem with creationist action by paraphrasing the roadside sign I saw in a recent photo on Facebook:
"Religion is like a penis.
It's fine to be happy to have one, and it's okay to take it out and wave it around.
But don't try to shove it down my kid's throat."
"If you can keep your head while those around you are losing theirs, you can collect a lot of heads."