"Thus, comprehending the impact on American society is even more difficult. In a sense, it is hard to understand that which you never see."
US EPA can help quantify the impact. EPA uses a figure of $9 million as "the societal cost of a life unnecessarily shortened" when justifying new or revised environmental regulations, regardless of the age of the persons whose lives are unnecessarily shortened. Multiplying that societal cost by the number of "lives unnecessarily shortened" (terminated) by abortion-on-demand each year, results in a "societal cost of lives unnecessarily shortened" by abortion-on-demand of $10.8 trillion, which is more than 2/3 of US GDP. The cumulative cost over the past 40 years would total nearly $500 trillion.