The issue of gay marriage has elicited a strong response from our listeners. Several of you called our comment line yesterday after we aired a National Public Radio commentary by Stanley Kurtz.... who opposes gay marriage. Kurtz said gay marriages... by definition can't produce children... and allowing them would undermine what he calls the "symbolic link" between marriage and parenthood. That... he says... would lead to more out-of-wedlock births and more family disillusionment. He says this has already happened in Scandanavian countries.. where gay marriages have been allowed for a decade. But this listener... from Minneapolis... questions the comparison to Scandanavian countries.