I'll say this:
I have a preference for basing my beliefs on the evidence, but I can't totally dismiss religion either. Based on the evidence, it is suggested that religion is an instrument of control and bs, but I can't say with certainty I'm right or even that experience correlates with reality. Nonetheless, I will say that relying on experience gets the most predictive success and explanatory coherence, and that's reason enough for me to rely on experience.
Also, I don't think religion necessary causes destruction. While religion may subvert people's impulses to commit rationally outrageous acts, it doesn't always have to do that. It also seems that the religious atrocities are often politically motivated, and the faith of the masses is something that's exploited. On the other hand, religion can subvert people's impulses to do good for the group. Another thing to consider is that people can be irrationally committed to an ideology that's not religious, such as communism.
But out of personal preference I will say this. I will assume that experience correlates with reality, and if you don't want to assume that with me then F**off.
Edit:
Also, the AIDs scare is silly is politically motivated. Omg, if you are promiscuous you may get aids and die! Actually, even if you are promiscuous, you are unlikely to get HIV, unless you're gay. Only 1% of the population has HIV, and even if you manage to copulate with a person who has HIV (considering all precautions of avoiding drug addicts) you are still unlikely to get it. For every time you engage in heterosexual sex with a person who has HIV, whether you are a male or female, you have a 1% chance of being infected without a condom. If you use a condom, then you have a 1/1000 chance of being infected. HIV is the least of your worries if you are promiscuous. Actually, you should be more worried about Herpes or HPV.
A useful rule to remember: don't touch a girl with blisters or warts on her genitals or anus. While that is a good rule, you can still get herpes or hpv even when there are no visible symptoms. Fortunately, it sounds like in a decade there will be a cure for herpes, yay!
If you want to have safe sex, be monogamous. You don't have to wait for marriage. Marriage is not a strategy, it's a formality. But monogamy is a strategy, and it will reduce your risk substantially if you can verify that your partner is clean. If you want to be safe but have more variety, you can also try other strategies like closed-polyamory. Closed-polyamory is basically swinging within a small network of people, but it's more dangerous because it just takes one person in that network to copulate with someone outside that network and infect everyone in it.