Why do you think swinging is better than cheating?

Boy, the girl who posted the question about her married lover got called all kinds of names, but the couple that wanted to swing...oh that's great! I mean WTF? Come on, cheating is cheating - atleast a secret affair means you actually respect the feelings of your significant other. And swinging? That means someone is going to use me for - exchange bodily fluids and yes, absord some of my DNA cells in the process. Ew! Boy people, I'm just saying, think about it before you let people sleep with you. . .