The point of life is not to be married or single - it is to be. We are human beings, or humans being. It does not matter so much what lifestyle we choose - it's what we make of the opportunities to grow, that counts.
How do I define success? Let me tell you, money's pretty nice. But having a lot of money does not automatically make you a successful person. What you want is money and meaning. You want your work to be meaningful, because meaning is what brings the real richness to your life.