When you're single, the world is your oyster. You can pick up and go anywhere you want, do anything you want, any time you want. No one is in the background nagging at you to do chores, go shopping, or "grow up." You're absolutely free to hang out with your buddies, party until dawn and find plenty of time for your personal interests and hobbies. Best of all, you have the luxury of being all by yourself, if you feel like it.
One of the best reasons for staying single is that you're not stuck with the same sex partner for the rest of your life. The dating universe is yours to conquer. You can happily sample all the different fare at the sexual buffet, and keep your taste buds primed for the next dish being served. What's more, you never have to wrestle with sexual boredom or lack of variety (and you'll be the envy of all your married friends).
Staying single means not being forced into buying a 10,000-megawatt diamond ring (so your fiance can impress her friends with the huge price tag) or any of the other bloodsucking financial drains that marriage entails, for that matter. And you won't be stuck having to regularly shell out for the flowers, more jewelry and the other gifts that a wife demands (it's like paying maintenance fees on a condo). By staying single, you're not legally or financially obligated to anyone but yourself. But once you John Hancock the dotted line on that marriage contract, she has you by the balls forever.