While I agree, to some degree, with your "comfort" excuse and I happen to think there are other values in what we see in moderate religious organizations now I think that this quote applies:
George Bernard Shaw writes:
The fact that a believer is happier than a skeptic is no more to the point than the fact that a drunken man is happier than a sober one.
Furthermore, speaking on behalf of most of the Christians I know, they do have a great deal of evidence to back up their faith - the fact that we would describe such evidence as purely subjective and existential will not faze them in the slighest.
And we know from psychology that such subjective
experience are
not evidence that a rational person should trust. All you do is prove that there is danger in even moderate religious thought by suggesting that such experiences should count for anything at all.
We all have this frailty; to encourage it is not a virtue. There are many frailties that we must come to understand and learn to overcome or our oh-so-brainy species might not make it.