As eisenbaum says, you are perfectly entitled to believe in creationism. But equally people (and especially engineers) are free to draw conclusions about the intelligence of someone who believes something that is stated with no supporting evidence in just one of the hundreds of mutually contradictory 'holy' books; in preference to the facts of evolution established by research and discovery. Even the Pope believes in evolution!
Feel free to believe what you want; but accept that others can feel free to doubt your rationality
[Dons nuke-proof tin helmet and hides in foxhole!]