For those of you who have decided not to have children, what are your reasons?

I have never particularly wanted them. I got pregnant at 16 and arranged a private adoption with wonderful parents for my child, and never regretted it. I feel like I would not care for the responsibility, and as a woman, I don’t see having a child as the be-all, end-all of the female experience. I would devoutly defend women who choose not to have children from those who would criticize her for it (and believe me, there are some who would-I have had conversations with them). Lucky for me, I married a man who shares my opinion.

So for those of you (male or female) who have made the decision not to procreate, why have you done so?