[GusFrerotte]

The whole reason this is even debatable is that we have made the means(sexual activity, lust) and end in itself. Sex is just short for sexual reproduction, thus we have become obsessed with the act in itself more than what the whole thing is used for. It doesn't matter if you believe in God or Darwin, as both seek to explain the natural order of things, and in that natural order of things men and women come together to produce offspring.