Things come about because of reward? Or reward comes about because of things? Looking at it one way, the point of sex is procreation. And because we fulfill this mechanism of "life", we are rewarded. That's looking at it one way. Another way is that we live for the reward. Now, if we just fuck aimlessly, fathering many children and we want nothing to do with the mothers and women mothering too many to give attention to and support, is that really very rewarding?
Condoms don't do it for me. They're fake. Its not even "sex". Not fully. Its basically dry fucking. Not to say I don't use them. Always.
People confuse "God" as some totalitarian ruler, made up, some "parent", in the sky, who is trying to keep a brutha down and enslaved, or restricting "fun". God is the law of things that are good. God is the law that makes things good. Religions try to interpret it, and often, like the pendulums swing, overshoot the mark, but if you pay attention, you might just see what they are trying to say. Where it circles.
Then again, I'm not too sure about any religion. They're all some other guys (guy's/guys') interpretation(s). I need to go over it, myself.