Interesting. I'd never heard of alief but it's a good way of explaining things. This is partly why I said (somewhere) that I don't think science will ever be able to fully prove this issue one way or the other—religion or lack thereof is necessarily a matter of alief as well as belief, and it's impossible in practice to look at this issue entirely rationally.
(I'm sure it's much too late now to claim I never intended to start a debate about religion. Now that there are about fifteen people all arguing against me I don't think I can keep it up, but I sure was asking for it.)
Remember, your post has (at the time of this comment at least) a score of 4. Subjects that are "taboo" on LessWrong are taboo because people tend to discuss them badly. You asked some legitimate questions, and some people provided you with good responses.
If you're willing to consider changing your mind, the next step would be to read the sequences. A lot of what you mention is answered there, such as:
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.