Wow.. fair enough anyone who doesn't want to have sex before marriage, but how many people who think that have been in a loving, long-term (but unmarried) relationship? I don't think I could get into an LTR with a girl without havng sex with her, its a very important and intimate part of a relationship. Just because you have sex before marriage, does not mean that the sex has to be 'sordid' or 'slutty' in any way.
99% of the population want sex (I would say 'all' but would doubtless get some objections) - that is just good biology. If you refuse to have sex until marriage, don't you think this is more likely to make you attempt to settle down and marry quite quickly so you can 'do the deed'? After all, not even that long ago people waited for marriage as a matter of routine, and married a lot earlier because of it.
I don't have a problem with people who genuinely want to wait 'till marriage as a matter of principle, but a lot of the people who say things like that are taking a 'holier than thou' attitude and end up having pre-marital sex once they get into a genuinely loving and fulfilling relationship, and realise that pre-marital sex isn't as bad as they thought.