In the end she seems to be enjoying the freecom of not being tied down by a child more than any selfless goal of not bringing more life to the planet. If she was that selfless she could adopt a child—there are many who need homes and love.
Good point. If she wanted to help out someone less fortunate, they would adopt a child. That would be “intellectually honest” at least. I think they just don’t want children and are up on their high horse about global warming as some kind of half baked justification.
In our country, conservatives tend to have more children than liberals. The more liberal yuppie type people have the fewest kids.
And if they were totally intellectually honest, they would give up on sex, because that would be a true sacrifice for them.