Perhaps a good question is, how did DDT itself become deeply vilified after a generation of use at such ridiculous levels, going from 'unlimited' to 'zero' tolerance, while other endocrine disruptors remain in common use today?<p>I think there is a human attribute in play. You don't have to make as many excuses for something proven harmful... when all you have to do is declare a "chemical Hitler" who has been vanquished completely, and direct everyone's attention to it.