The Question is the Title
This is something that got brought up to me recently, and I know the answers will probably vary from person to person.
Personally I need an emotional connection to sleep with someone. While sex can be enjoyable, i personally find it boring with the wrong person. While I'm not innocent i can honestly say that sleeping with someone just because she is pretty has not been satisfying for me personally(and it makes me feel guilty). But when I find a personality attractive and I'm emotionally connected with someone it is a different story. Thus I don't sleep with anyone anymore unless I truly care about that person.
Your answer below in the comments
I'm VERY curious to hear some of the answers.