Clinton did it because he's male and it's human nature. If we're going to talk about the President and sex, then lets talk reality here. It time the human race grew up and we talk about the real birds and the bees. We are the descendants of 3 billion years of sexual activity. Virtually all life on this planet is trying to get laid.
Humans are the first animal to have a limited ability to control reproduction, but only limited.
There are those who have managed to be celibate their entire lives, but we aren't the descendants of those people. We're the descendants of those who had no self control. Sex is a 3 billion year old tradition and it's not easy to break the worlds oldest tradition. Men are from the Earth. Women are from the Earth.