"It is hard to articulate a rational explanation for this practice of making our babies bleed, beyond “That’s what we’ve always done,” and I know how weak an argument that is. Even Harry Brod, noted professor and scholar of masculinities, in an article entitled, “Circumcision and the Erection of Patriarchy,” wrote: “For many Jews, the circumcised penis is the defining mark of being a Jew…. [T]he idea that circumcision confers Jewish identity has a deep and powerful hold on many Jews, even those not otherwise particularly observant.” Even opponents of patriarchy are reluctant to oppose a tradition that seems so essential."
January 1, 1970
https://en.wikiquote.org/wiki/Circumcision