Because abortion is now legal.
Your reasoning is as untested as mine. I recognize that the law change had an effect, but I don't believe that just because something is made legal that people will rush to do it.
They had to have their minds changed first about the "Free and easy" sexuality to be had with no consequences. This was the result of contraceptives.
In the former Soviet Union, abortions were quite common due to the fact that contraception was tough to procur.
They were quite common due to the lack of desire to bring children into a Communist hellhole.
Following your logic, the civil rights movement can be just as responsible for the increase in abortions. After all, the civil rights movement was followed by an increase in abortion.
I understand that post hoc ergo propter hoc is a fallacy, but that doesn't mean that such things must be false. Certainly the availability of contraceptives caused a change in sexual behavior. Can you agree on that?
And sexual behavior leads to pregnancy. Which leads to abortion.
SD
Abortion is a medical procedure. When it was illegal, it would only be practiced by shady doctors. Few women were willing to take the risk. When it was made legal, an entire medical infrastructure was created to deliver quick, efficient, safe abortions.
Certainly the availability of contraceptives caused a change in sexual behavior. Can you agree on that?
Absolutely. Though, there were certain other factors at play. The women's movement, for one.