I think the current answer is quality - people want the best for their kids including a future or they won't have them otherwise. They may feel that their lifestyle consume too much time, that they can't afford what they need, or just that they and their family situation would make poor parent(s) for whatever reason. And this is peripheral to adoption vs reproduction.
Kids have turned from a resource like they were to farm families to an expense and an increasing one at that - and I don't mean in a "kids these days" sort of way - the world changed and not people. Which leaves children to be had by those who want to have them for the sake of having them - some sort of enjoyment or sense of obligation.
Kids have turned from a resource like they were to farm families to an expense and an increasing one at that - and I don't mean in a "kids these days" sort of way - the world changed and not people. Which leaves children to be had by those who want to have them for the sake of having them - some sort of enjoyment or sense of obligation.