What pain must one live through to express this sentiment?

When Dr. Land said “I believe our grandchildren will look back with horror that we kill an unborn child every twenty seconds in the early twenty-first century,” my militantly pro-abortion mother snapped, “No, they’ll be saying ‘why didn’t they do it every ten?'”

What pain must the writer feel to so betray his mother on a blog?

Thanks to After Abortion for the link.