Most believers are the result of secular (read:  anti-religious) public school propaganda.  If culture controlled, cultural things, such as the AIDS epidemic, would have had a more prominent role in our understanding of why, e.g., male same-sex behavior is not something to be encouraged.

Radical leftists in the government, not unlike homosexual priests in the Church, are driving the culture.  This isn't just a natural progression of culture as many would like to believe.