Jews approve of abortion more than almost any demographic group in America. Using GSS data, I calculated that 75 percent of Jewish women believe a woman should be able to have an abortion for any reason. I don't have data on the percentage of unwanted Jewish pregnancies that are terminated with abortion, but it should be higher for a group of people who don't see anything wrong with it. This might help explain why 23 percent of Jewish women ages 40 to 59 have no children (GSS data).
Our country needs all the scientifically gifted people we can get, and Jews contribute disproportionate numbers of talented people. It's a shame that almost a quarter of Jewish women fail to have even a single child.