Give it a few generations.
In the past, having a family was status quo and basically required.
Now, it’s a choice.
Natural selection will heavily favor those with the “I want kids!” gene.
In the past, having a family was status quo and basically required.
Now, it’s a choice.
Natural selection will heavily favor those with the “I want kids!” gene.
It's impossible for me not to think of Idiocracy while writing this - which was extremely exaggerated, but still...
There are a lot of subtle hereditary hints. This isn't to say a person can't consciously counteract those hints, but that in the long run those hints will have an impact on behavior which feeds back into selection
It's possible to inherit traits which will hint one to choose not to use contraception
This is the whole nature vs nurture debate. Ultimately it's both