1. Sex can give you orgasms. No further explanation shold be necessary.
2. Sex makes you happy. You'll wake up the next morning with a smile on your face. The brain releases endorphins after sex that will decrease stress, inducing a state of euphoria. Oh happy day!
3. Sex burns calories. A sex session can burn about 200 calories, which is like running 15 minutes on a treadmill.
4. Sex helps you fall asleep, which makes it better than taking Ambien or Nyquil to drift off to sleepytime -- both of those remedies will leave you with a hangover the next morning.
5. Sex can bring people together and make babies, and having connections to other people is what makes the world go 'round.
6. Sex gives us something to talk about with our friends. What would you do with your free time if you weren't theorizing about what Ryan Gosling looks like naked? Read a book? Write a screenplay? That's way too ambitious. Let's just keep thinking?new subject: Daniel Craig.
7. Sex gives me something to daydream about when I'm bored. See above "Daniel Craig."
8. Sex is (usually) free.
9. Sex can make you live longer. And if it doesn't than it can give you a reason for living.
10. Sex makes you feel more confident and more comfortable in your own skin.