It's not really that big of a deal.
Sure, it's necessary for the creation of life which is beautiful/terrifying, depending on your point of view. It leads people to do some pretty strange things, like learn to play the guitar. It also makes you feel good. Really good, if you're doing it right. Remember the movie Boogie Nights? Do you remember when Burt Reynolds' character was talking about directing the best porn movie in history? Well I'll remind you.
I don't want to make a film where they show up, sit down, jack off and get up and get out before the story ends. It is my dream, it is my goal, it is my idea, to make a film that the story sucks them in and when they spurt out that joy juice they just got to sit in it.They can't move until they find out how the story ends.I love that movie. I love that quote. The idea, however, is pure fantasy. Has anyone in the history of the world ever kept watching porn after they've already satisfied themselves? Of course not! The idea is ludicrous. Watching people fuck is boring and a bit gross looking if it isn't accompanied by having a certain amount of lust in your loins.
Imagine a couple of aliens from another planet looking down on us having sex (you better believe they're watching, you dirty girl). The observations they would make would probably sound a little something like this:
Kodos: I have no idea, it's kind of strange looking. Maybe he's giving her the Heimlich?
Kang: He really should take CPR lessons because he doesn't seem very good at it. He's got his arms around her and he keeps slamming her against him, but they've been at it for 15 minutes already, she should have suffocated by now.
Kodos: Whoa! What is she... what?
Kang: Well, she's definitely not choking.
When you watch the discovery channel and Mr. and Mrs. Lion are getting it on, do you think, "wow, that's so beautiful and romantic"? No, you giggle and make inappropriate jokes because it looks really stupid looking. So why do we make such a big deal out of it? Everyone's doing it or it at least thinking about doing it. We don't attach any taboo connotations to eating dinner. Everyone does that too.
I think there is a big mythos around sex because it just makes sex more interesting. I've never said to a girl "Hey, looking at you in that short skirt makes my body need an orgasm. Can I put my penis in your vagina until I excrete bodily fluids inside you?". Why? Because it doesn't sound very exciting or appealing. I'd have a much better chance of finding satisfaction from my lover if I smacked her on the ass and said "I'm going to make you my slut tonight". Sure it won't always work, but the odds are much better (if it doesn't get me slapped) because it sounds intense and naughty.
I'm perfectly content with living in a society that is prudish because I certainly am not. It's fun to have dirty little secrets. I say to everyone, embrace your kinks. Embrace your cravings, desires and don't be afraid to add a little excitement to your love life. Being bad is fun and keeps you closer to the person you're bumping uglies with. I say keep sex taboo because it makes me want to excrete bodily fluids inside of you that much more.
Images taken from here, here and here.