What this survey tells me is that the biggest predictor for Jewish affiliation is not, any longer, who your parents were or how you were raised. Jews could have the highest rate of births, but if all those kids leave Judaism, it doesn't mean much for the growth and strength of the Jewish community. By contrast, if Jews aren't having as many kids (something that, by the way, also tends to be correlated with high education and material comfort, although causation is more difficult to prove) but new people feel called to Judaism and become converts, then the Jewish community will stay healthy... provided that converts are welcomed as a genuine part of the community.

What this tells me is that focus needs to shift from "Have kids and raise them Jewish or else" to "Welcome converts or else" if we are to stay a vibrant living religious community.