I mean a person who holds self-deceptive beliefs that serve as the basis for a moral code of some sort. Church attendance is irrelevant.
I know there are some people who act religious and call themselves religious but aren't religious at all, but I don't think that's the kind of person you were talking about, since such a person couldn't benefit from the placebo effect. You're talking about the kind of person who has successfully fooled himself into holding religious beliefs, and yet is still so fully aware that it's all self-deception that he calls it "a load of garbage".
There may be real religious believers who would say something like what you've written, but I'm certain that it would just be a rationalization for them, a way to hide the ridiculousness of their beliefs behind a veneer of fake instrumental rationality.
Considering I'm currently unemployed and have very little money left in my bank account, I would bet a thousand Canadian dollars that you can't find a real religious believer who will say those words and honestly mean them.
EDIT:
And if you were talking about people who completely fake being religious, well, in my experience most of them don't ever admit to themselves that they're really atheists in their heart of hearts. I suppose there must be exceptions, though.
Considering I'm currently unemployed and have very little money left in my bank account, I would bet a thousand Canadian dollars that you can't find a real religious believer who will say those words and honestly mean them.
Okay, see, we're going in circles here: I'm trying to ask about the existence of someone who knows "it's all a load of garbage", heck, maybe even contributes to this very board, but cynically joins a church to get the social benefits.
And then you keep saying, no, such people don't exist, if you mean people who are also reall...
Anticipation and faith are both aspects of the human decision process, in a sense just subroutines of a larger program, but they also generate subjective experiences (qualia) that we value for their own sake. Suppose you ask a religious friend why he doesn’t give up religion, he might say something like “Having faith in God comforts me and I think it is a central part of the human experience. Intellectually I know it’s irrational, but I want to keep my faith anyway. My friends and the government will protect me from making any truly serious mistakes as a result of having too much faith (like falling into dangerous cults or refusing to give medical treatment to my children)."
Personally I've never been religious, so this is just a guess of what someone might say. But these are the kinds of thoughts I have when faced with the prospect of giving up the anticipation of future experiences (after being prompted by Dan Armak). We don't know for sure yet that anticipation is irrational, but it's hard to see how it can be patched up to work in an environment where mind copying and merging are possible, and in the mean time, we have a decision theory (UDT) that seems to work fine, but does not involve any notion of anticipation.
What would you do if true rationality requires giving up something even more fundamental to the human experience than faith? I wonder if anyone is actually willing to take this step, or is this the limit of human rationality, the end of a short journey across the space of possible minds?