My wife and I married nearly 15 years ago. Every since I can remember I did not want/need children. Most people would tell me (years ago) that i would change my mind--not so.
We love the lifestyle that the freedom allows. We get to be as selfish as we want without harming a child. We are not contributing to the world overpopulation problem (we would adopt if we wanted a child anyhow).
I love the decision everyday and am proud to be "childless by choice"