No doubt the WT has harmed a lot of people, but mostly because we allowed them to. Children born into JW families are the most tragic victims of their inhumane policies. They are a corporation marketing themselves as a "religion," so they are protected from the consequences of ruining people's lives. In the U.S. at least, we have freedom of religion and freely chose to be JW's albeit perhaps without knowing exactly what we were getting into.
A lot of people have lived a lie and bought into schemes, religious and otherwise. Usually, it's best to cut your losses and move on. I regret that I let myself be snookered by the JW's, but it was a phase I had to go through to learn some things and become more wary and less naive. I am just grateful that I didn't join Jim Jones' or David Koresh's cult, or Scientology. We are the lucky ones in certain respects.
Most people who know anything about JW's would envy us the fact that they won't speak to us and don't want us in their bogus "religion."