Whatever trait you have that is making you consider not having children, by not having children you make this trait less frequent in the next generation.
Only if that behavior is genetic in origin. In many cases, voluntary childlessness is a learned idea that doesn’t need children to get passed on.
Learned ideas depend on the genetic ability to be receptive to that learned idea. So if you don’t have children because of the learned idea that it is better not to have children, future generations will be less receptive to the idea that it is better not to have children.
Only if that behavior is genetic in origin. In many cases, voluntary childlessness is a learned idea that doesn’t need children to get passed on.
Learned ideas depend on the genetic ability to be receptive to that learned idea. So if you don’t have children because of the learned idea that it is better not to have children, future generations will be less receptive to the idea that it is better not to have children.
I have 5 siblings. My mother had 7 and my father had 9. There’s nothing genetic in my childlessness.