I get your point...but it could be argued that JWs, Mormons and Catholics will tell you they go because they like it.
I see your point.
I think most of us will agree that JWs (in particular) are much different, because of the violence they direct against minors (blood issue) and the deception/dishonesty used in the recruitment process. Moreover, all eight of Robert J. Lifton's criteria for Thought Reform are arguably present in the JW experience.
So, comparing any "mainstream" church with a high-control group is not apples-to-apples, IMHO.
Now, that being said, it is very TRUE that if the cult member believes that he is happy, (according to Hassan) they are virtually impossible to extract from the grip of the Mind Control.