I really don't want to get involved in the original topic, as I see, agree, and disagree, with most all sides expressed.
However, let me play devil's advocate here:
So, 20 years from now it's discovered that continuous hits to the abdomen can cause infertility, or miscarriages, and there's a lawsuit because ..... 'who woulda thunk it'.
I know, I know, this probably makes me a sexist. But it's really just a joke about absurdity.