Because at the time, it was just sex, and when you are completely disconnected from yourself, it doesn't seem like it's a big deal. Now being older and more connected to my spiritual self I realize that sex is not something that is meant to be thrown around and given out so freely, it is a sacred act that creates a bond between two people that love and care about each other. It is so important for us (humanity) to realize this. There is a lot of power and amazing potential within this act and it has the complete capability of connecting us with our true selves.