Nope. I will deny it. Can't say I've ever cared about sex, nor do I think it's divine or sacred in any fashion. I tried it a few times, to see what all the fuss was about and wasn't impressed. Haven't done it since.
Although I'm sure my view has something to do with my intense loathing of interpersonal relationships and human interaction in general. *shrugs*
I would definately argue about it being the point of our existence, though. I exist as a human being, and yet I feel no obligation to procreate, nor do I want to. In the end, it all comes down to what YOU, the individual, wants. We're a crazy species with an equally crazy trait called "free will". At this point in our lifetime (as a species), I don't think we can safely assume anything about the thought processes of our fellow brothers and sisters. There's just too much grey area at this stage. If you feel sex is whatchya gotta do, then by all means, have at it. If not, same thing.
But "sacred"? I don't think so.