Alpha Course is a little too, uh, low-church for me but yeah. I was actually talking to an Eastern Orthodox cleric of some description some time ago about this sort of thing, and he said that for many, even most serious mystical Christians there's a certain degree of sustained effort in believing the whole thing, so obviously that would depend on the extent to which one feels up for making that effort and is supported in making it by one's environment and experiences. That's certainly been true in my case.
If someone get's comfort from that I'm not ultimately opposed to it unless they then start using that as a justification to cause discomfort to others. I'm essentially a Humanist. I get support from my husband, my family and my friends. Even when I was a Christian, in retrospect that was always the case. I never found prayer particularly easy because it was always directed to something I never saw and I didn't derive much from it despite trying to force myself to. Not to be flippant about such things I probably got more inner peace and contemplation from stroking my cat. I still contemplate and meditate. But I'm entirely aware that it's a product of my own self and my environment and there's nothing external to it. Nothing is making me calm but me. The world to me makes more sense without a god.
That's worthy, I think, of anybody's respect. My cats, as it happens, are skittish and one of them is delicate on account of his very advanced age and feline arthritis, and a lot (but not all!) of my friends are actually assholes whom I like and trust implicitly because they're
my assholes (I am, of course, myself one of the assholes). My family could be the subject of an update thread. Even so, I do get a lot of my peace and actually a lot of my spirituality from them.