In cruising around the Internet, it seems like those who are most against the Church of Scientology are the ex-Scientologists. Why are they so angry?
It does seem like some ex-Scientologists are a bit vitriolic when it comes to the Church. They do seem to have a lot of negative things to say about the organization.
Most people today know about the shady parts of the church. But many of these ex-Scientologists got into Scientology before those things were widely known. For them, finding out the truth is much, much worse. They believed. They gave a lot of themselves, sometimes many years of their lives, their potential careers, potential family, their friends. They gave up a lot to help this organization. They truly believed they were "saving the planet."
Now, to find out that they were fooled, and badly, and that the organization they gave up so much for was, at the top, nothing but a fraud -- this is very, very hard to take.
Some ex-Scientologists simply go away and try to make the best of their life now. Others have taken the betrayal much more personally, and they want those at the top of the Church of Scientology who are responsible for this fraud and this betrayal to pay the full consequences for their actions.
Reasonable people cannot fault the ex-Scientologists for being a bit peeved.