I won't vote because I'm undecided. I'll just share my opinion.
I think that yes, sex is great. In the animal kingdom, it seems like only we humans attach the feelings of love and affection to it. The other animals do it because it's their duty. They either have sex or their species dies out. But in us humans, there is an emotional and sentimental attachment to it. That's what sets us apart.
In light of these emotional and sentimental attachments, I am therefore of the opinion that it should only be done at the proper time, in the proper place, with the proper person. Whether the proper time for you is when you're married and the place, in the bedroom (or kitchen, if you prefer), I'll not meddle with that. I will only say that the person with whom you do it be someone you truly love . . . except your parents. I mean, come on, that's incest.
Of course, this is just an opinion. It may be wrong, and it's open to debate. I'm willing to answer questions.