Ring, ring...the 1950's called. They want their point of view back!
Seriously, I am not promoting promiscuous sex. I was taught by my parents that while sex can be a lot of fun, absolutely nothing compares to sex with someone you truly love. I believe they were right, and they also taught me something else. It's a big world, and not everyone thinks the same about sex, gender, preference, and so on. So pushing my own narrow views of human sexuality on others will just make me sound "holier than thou", and will never change how others behave. Of course it is perfectly fine to point out that sex can be dangerous and/or exploitive but, IMO, it is not ok to lecture others how or when to practice consensual sex.