You should when you actually have a better theory instead of just a bias and a bigger ego. Creationists were rightly, and successfully, refuted because there existed a well proven counter theory, evolution. But we do not have anything similar when it comes to what caused the Big Bang, ranting about 14D planes colliding and creating ripples like on a pond, without any idea how those planes existed in the first place does not really strike me as a particularly sane argument. And there is a difference between simply wanting to speak teh truth, and generally trying to change peoples beliefs. Too many scientists go around not says: "no, that isn't exactly rights. You cannot really say that", and instead saying: "No, your are wrong, your religions is wrong. Convert to Atheism or your soul will burn forever in the fires of the big bang"