Why don't you think interfaith marriage partners can maintain the cultural aspects of one of the partners? If it's important enough to them, I'm sure they will transmit it to their children, no?It is an interesting issue.
Bottom line is that the question is moot, because Humanistic Judaism and secular Judaism may be meaningful to the current "practitioners" but they have no method to transmit their systems to their children because implicit in their value system is an embrace of interfaith marriage. So they are doomed to extinction.
I'm going to nitpick on terminology a bit. Agnosticism and Atheism are mutually exclusive terms. One is either an agnostic atheist or a gnostic atheist (as opposed to an agnostic theist or a gnostic theist). All atheists I've ever known (including the well known "new" atheists such as Hitchen, Dawkins, Harrison, Dennett) are all agnostic atheists, since they acknowledge that you can't definitively disprove God. It is a common misconception (and common source of strawman arguments) that those who self-identify as atheist are gnostic atheist. That is not the case....Theologically, Judaism is 100% compatible with agnosticism, but not atheism -
Reading the comments section of that article, it appears that many atheist/humanist Jews have done just that.What I dont get about the Jewish atheists and the Jewish humanists is that if they would actually learn more about the other Jewish denominations, they would find currents of ideology that are probably compatible with their value system. Jews have been discussing and debating these issues for 1000s of years.