However, I do have a question in this regard, and this may be where I am misunderstanding. What is stopping one from saying I want no part of this, I am no longer a Catholic? The church doesn't own anyone. I am not saying you should do this, but I am asking what stops one from doing this. Some have claimed you can't. I haven't read the thread end to end, but it's not clear to me what is stopping someone who wants to leave from leaving.
Well, apparently you can't leave any more in the sense that the Church will still claim you in stats if you were baptised (something someone said upthread I believe).
But the main reason is personal and social I suppose. If you are a Catholic who believes in God (as opposed to those who are effectively Catholic atheists) then the potential loss of your immortal soul will stop you leaving - the feeling that you need to be a Catholic and to keep attending Mass, confession, Holy Communion etc (delete the bits you are personally less bothered about which vary between individuals). For people in this situation (and I include myself in this) another Christian denomination just won't do the trick. Of course, there are plenty of people (one or maybe two on this thread even) who don't feel that way and will and have left the Catholic church for another.
Catholics who are also atheists have different reasons and have explained themselves on this thread pretty well I think. Dara O'Briain also covered the point, albeit in a jokey way, but it sort of strikes at the heart of it I think:
"Im staunchly atheist, I simply dont believe in God. But Im still Catholic, of course. Catholicism has a much broader reach than just the religion. Im ethnically Catholic, its the box you have to tick on the census form: Dont believe in God, but I do still hate Rangers. The fact is that its a shared hinterland between me and every other Irish person, a collection of references that we all understand, stories we all know, our opinions about William of Orange, everything. It plunges you into a particular side of every debate, its like a huge club you cant ever leave. Im definitely a Catholic, and nobody could possibly believe in God less than I do.
- Dara OBriain, The Word, April 2006"
Whether he would still say the same, of course, I don't know.