The Church of Scientology is an organisation accused with reason of serious abuse and exploitation of its members.
The Church of Scientology is a vicious and dangerous cult that masquerades as a religion. Its purpose is to make money. It practices a variety of mind-control techniques on people lured into its midst to gain control over their money and their lives. Its aim is to take from them every penny that they have and can ever borrow and to also enslave them to further its wicked ends. (...) Scientology is a confused concoction of crackpot, dangerously applied psychotherapy, oversimplified, idiotic and inapplicable rules and ideas and science-fiction drivel that is presented to its members (at the "advanced" levels) as profound spiritual truth. 
L. Ron Hubbard, the founder was a schizophrenic and a fraudster, it's unclear to this author how far Hubbard believed his insane ideas and how far he was simply fraudulent but either way following his "religion" is not reasonable.