My ViewI have nothing against one night stands on a moral/ethical level. If people find pleasure in sexual release without any binding agreements, who am I to condemn them?
The main reason I'm abstaining from sexual intercourse until I'm married is sexual diseases. You might think you're with a guy forever, but then he leaves you a month later. From there, the cycle continues and you run an increased risk of acquiring STD's and STI's. One night stands are an even greater risk and condoms don't protect against every disease or infection.
I like playing on the safe side when it comes to sexual well being.