Reasons such as reduces stress and icnreases cardiovascular capacity/burns calories are quite laughable, as there are like infinate other activities one could do with the same result. In fact, that could be said of all of those 10 points.
And on the point of intamacy, if one requires sex with their partner in order to love them, it really demonstrates the strength of their relationship, doesn't it?
Life isn't about sex, mate, wasting your limited time on Earth on obsession over the carnal is just silly and quite pathetic.
...And talking about the side effects of sex, don't make me repaste all the so far identified health risks associated with homosexual sex, please.