I remember reading a piece about how Catholic church is trying to ban people from using condom and thought it was pretty ridiculous that they were against safety. A fellow Android developer was catholic and started a long rant about how condoms promote infidelity and adultery -_- and he literally sat in front of the screen for hours writing a huge rebuttal to what I have said.

Another time I advised him against purchasing mutual funds because as a Economics/Finance major, we learned that mutual funds have many lot of questionable hidden costs and their market performance aren't the most sound vehicle for investing one's salary but he basically told me that he trusts the sales person because he is also Catholic. He was newly wed, living with his parents, had a baby on the way, and made the same salary as me which wasn't much. I didn't feel bad though.

What I got from this is that even with the face of evidence and hard facts, some people are just that attached to religion, an old artifact for a time when science and logic were persecuted and laughed at, it was just shocking to see it continue so rigidly.