I have absolutely no issue with those who believe in a God or who have faith. Not a single one, despite the fact that I see no evidence to support that one exists. If having a personal God gives you hope in a better world or whatever, then more power to you. I have no issue with faith in itself. I do, however, think it's not only logical, but responsible to look at a person's beliefs and determine whether or not someone who holds those beliefs should be considered for a position of power that should be reserved for someone honestly intelligent or even be considered completely sane.
For example... if you read the bible and take it literally. If you believe that Moses actually did part the red sea, or that there was a flood that covered the entire earth and that a man and his family gathered two of EVERY animal in existence on to a boat of all things and waited the flood out, then somehow managed to repopulate the entire planet from that? If you believe that the Jews stated in the bible were actually here in the US and not the middle east. If you think that man and dinosaurs walked together because the bible says the earth is only a few thousand years old...
Then you have no business being in a position of power and/or authority. I'm sorry, but I am absolutely terrified of the idea of a person who completely overlooks all historical evidence presented to us not just by history, but by science, math, etc... and instead chooses to take a book written during the bronze age (or during any age, for that matter) that has absolutely NOTHING backing it up as fact and you decide to look at it as a history lesson? That type of person shouldn't hold a position that gives them any power at all over the lives of others.
Reliably, the majority of intellectuals and those who are at the top of their given field (biology, astrology, physics, etc) are often Atheist or at the very least Agnostic. Why? Because there is nothing logical about religious beliefs. There is NOTHING logical about the bible, or believing it as an actual factual recounting of history. It's the recounting "miracles" that happened thousands of years ago. Re-telling of events witnessed by uneducated, unenlightened poor people in the middle east during a time when the answer to everything we couldn't explain was "Sky Daddy did it". Not just that, it's been verified that most of the retellings were second or third hand! The stories about Jesus? Written LONG after his death. By people who couldn't have possibly been there to witness it. That's how tall tales and fables started.
We know that Jack and the Bean Stalk is a fairy tale. What makes religious texts and stories so different? They were created for the same reason. To teach people morals and how to live. But some people take this stuff LITERALLY. It's when you take it literally, that I question your intelligence (in at the very least the area of common sense), not to mention your sanity.
I wont even get in to the more new age religious beliefs like Mormonism that basically teach that if you disagree with even ONE WORD of their teachings... if you don't take it all completely literally... that you can be excommunicated. And their stuff makes even LESS sense than the older religions do.