The reason being childless by choice is such a hot topic right now, is because the economics of existence is being shoved in our faces. On average, the cost of having a child is $17,660 annually. With the rising cost of fuel, the shrinking of the "middle class", instability of governments on the global stage, the choice to not have children strikes some as too powerful.
The other day, I heard someone reason away the fact that they were not financially ready to have another child with the argument that somehow, it would all just work itself out. No financial planning, just the desire to create a life is what this person's idea of pro-creating came down to. In that instant, I realized that this person, like so many others actually operates on the concept of magical thinking, i.e. "I know we really can't afford to have another child in terms of time, money, or availability of medical insurance, but love is enough."
I contend that when faced with someone who has decided not to have children, this type of person is faced with someone who is not operating on magical thinking, but rather, operating in reality. There is no valid argument against not having $17,660 that you are willing to part with. There is no good argument against: "I just don't want to wait hand and foot on someone." There is no good argument against: "That is not where happiness lies for me."
There is no good argument against someone who thoughtfully and prudently reaches their decision not to have children. On the other hand, the existence of the foster care system, juvenal courts and halls, the countless numbers of abused and neglected children that we don't yet know about...these are all examples of the evidence that points to a whole lot of people not thinking about having and RAISING children.