Creationism is based on a literal interpretation of the bible.
All creation "science" is focused on validating the biblical
account of creation. There are many religious creation myths, but
no credible evidence to substantiate any of them by scientific standards.
Every argument used by creationists to contest generally accepted
scientific facts is either inconsistent or an outright fraud. One
can accept the bible on faith, but don't advocate it be taught as
"science" alongside mainstream science.
Creationists often claim a "conspiracy" among mainstream
scientists or "Darwinists" to preserve evolutionary theory.
Trying to get scientists to agree on anything is like herding cats.
Every scientist's dream is to find credible evidence that runs counter
to a broadly accepted theory. Real scientists view their own and
every other scientist's work with great skepticism, lest they be
made to look foolish by promoting an idea that may be refuted by
evidence produced by competing scientists.
As for "Intelligent Design," it is just "creationism
in a cheap tuxedo." For a scathing critique, read U.S. District
Judge John Jones' ruling against
a Pennsylvania school district.