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sc94597 said:
RJ_Sizzle said:

 You're not born with religion, gay is biological.

Being gay is much more innate than being religious, but that isn't to say there isn't a biological influence on religious beliefs as well. 

http://www.ncbi.nlm.nih.gov/pubmed/10637988

Although the transmission of religiousness has been assumed to be purely cultural, behavior genetic studies have demonstrated that genetic factors play a role in the individual differences in some religious traits. This article reviews the extant behavior genetic literature and presents new analyses from the "Virginia 30,000" on the causes of variation in religious affiliation, attitudes, and practices, and relates these to personality as construed by Eysenck. Results indicate that religious affiliation is primarily a culturally transmitted phenomenon, whereas religious attitudes and practices are moderately influenced by genetic factors. Further, Eysenck's personality traits do not mediate genetic influences on religiousness, but significant negative genetic correlations are found between church attendance and liberal sexual attitudes. Implications and possibilities for future studies are discussed.

Although all human traits are biological to an extent, anyway. We are biological beings. 

Spirituality is not in our blood, though we are biologically tuned to succumb to certain sociological functions. Humans will always form beliefs based on whether they're right or not. So, you can be born gay, but, you're not born to hate homosexuality, or pray on a carpet five times daily. Mass religious belief has to be taught, or influenced. Most societies go beyond religious text to decide what's best for society as a whole. Even non-secular nations cant adhere to theocracy 100 percent of the time, they'd never get anywhere.