I thought I'd briefly describe the Christian Science church and my history in it, as it's a somewhat unusual and controversial organisation (often confused with Scientology, but it's completely distinct from that). I'm sure I did this somewhere on RDF, but for completeness, it's maybe worth a mention here.
Christian science is regarded by many christian denominations as "non christian" since:
1 It doesn't teach original sin
2 It doesn't teach the divinity of Jesus
3 It doesn't have the traditional picture of hell
It was founded in the USA by Mary Baker Eddy in 1866 or thereabouts.
The basic priniciple of CS is that God is good, and he's omnipotent, omniscient etc. The consequence of this, which the church teaches, is that evil/disease/death is unreal. Yes you heard me correctly. Nasty stuff doesn't exist. You may well ask, "well how do you reconcile that with the evil in the world ?" The answer is that the evil in the world - all of it - is entirely illusory, and if you can just acknowledge this (through prayer, and focussing on God), then bit by bit, you will see the evil begin to disappear from your life. This is commonly applied to the treatment of disease - Christian Scientists are encouraged to treat disease through prayer rather than medicine. Of course the teaching is entirely false, and there have been tragic consequences of following it.
How does such a dangerous and blatantly false idea perpetuate itself ? Well CS people pray about all disease, the biggest proportion of which is, of course, self limiting disease. They declare triumph when disease is healed, and there are weekly meetings in the church to give testimony about such successes. The vast majority of these successes are cases of colds/flu and suchlike which are quite effectively handled by our highly evolved immune system ! CS people attribute all the healings to the result of prayer, and the delusion is perpetuated. Stories spread in the church, and you get the impression that serious stuff is cured too - cancer, broken bones etc.
My family's involvement in the church began in the late 30s (I would estimate), when my grandfather had really bad stomach pains. There was pretty poor healthcare then, and it was never diagnosed the way it would be today. He thought it was cancer. Someone at his workplace suggested he try a Christian Science practitioner (these are people to do the prayer/healing work for you for a small fee). He did and the problem went away. Thus started Christian Science in my family.
(Interestingly when I was in my 40s I started to have some nasty stomach pains. After tests for h.pylori and an endoscopy, the doctor said it was unexplained gastritis - quite common - just treat the symptoms with drugs to reduce the acid. I did and it went away after 6 months or so. I wonder if there's some genetic susceptibility to this condition that I share with my grandfather.)
The CS church is dwindling in membership now - less than 100000 worldwide (yeah yeah, Darwin awards...), so many churches are closing down.
Oh yes, forgot to mention, - I realised it was all bollocks and left !