This is not an issue of religion or moral obligations, it's about responsibility. Abstinence is the only 100% effective method of preventing unwanted pregnancies. It is also quite effective in preventing the spread of STDs. I'd be interested to know how old some of you are because it would seem many of you are out of touch with reality. Getting shitfaced on the weekends and having unprotected sex is not a college phenomenon. I am currently a high school student and I can tell you that the majority of the people I know get shitfaced on a daily basis, especially during the summer. Some have been doing this since junior high and even earlier. One of the problems I see is a double standard being held by parents. Just recently I had a friend whose mom found his stash of coke and a 20 sack of weed. She scolded him, took it away, then did it with her boy friend. That is not responsible parenting. Teach your kids early and teach them well, but DO NOT rely on your teachings because when children come of age they will make decisions for themselves. You can do your best, and you should, but in the end it comes down to the responsibility of your child. As a teenager, the best tactic I could encourage you to use is to scare the hell out of your children early and often. Had I not witnessed the effects of drugs, alcohol, and wanton sex at an early age I may have turned out just like many of my friends.
P.S.-ArmdLbrl, I'd be interested in knowing what city you are in, you sound like someone I know.