Because She Let Me

Researchers at the University of Texas spent 5 years compiling the top 237 reasons why people have sex.
And they found out, people like sex, love, not so much.
College-aged men and women agree on their top reasons for having sex — they were attracted to the person, they wanted to experience physical pleasure and "it feels good."
Expressing love and showing affection were in the top 10 for both men and women, but they did take a back seat to the clear No. 1: "I was attracted to the person."

I don't buy that. The real reason is because sex is fun and it feels good. I'm attracted to Meadow Soprano and I would love to have sex with her, but I would not like to have teeth pulled with her, because even though I'm attracted to her, that doesn't feel good.