If you come to think of it, every religion deals with 3 unanswered questions:
1) Is there anything after our physical death;
2) What is the place of mankind in the Universe;
3) What is considered ethical.
But, in my opinion, these questions are quite separate and touch on different areas of human intellectual effort. The characteristic of every religion is its tendency to mix the answers of these three questions in quite various ratios and causal connections to gain its dogmatic power.
As far as the first one is considered, it is the only domain where religion has and will have unchallenged supremacy. Why? Because it is not subject to experimental verification, and, therefore, out of the reach of scientific investigation. The only thing science can tell us for certain (mostly from empirical evidence) is that every living being dies sooner or later, and, after death, its body decays irreversibly.
It is exactly the way in which a specific religion connects this issue with the other two that characterizes it. If the religion postulates an answer on question one, and, from there draws its conclusions about the other two questions, it can be called ‘dogmatic’. It is built in the manner of a strict axiomatic system. If, on the other hand, the religion is drawing its conclusions about ‘afterlife’ from current accepted answers of questions two and three, we can consider it more of a philosophy, than religion and call it ‘speculative’.
Question two is what I call ‘the demise of every religion’. Why? Because, in fact, it can and was repeatedly answered in a systematic way by scientific research. This caused some religions to become obsolete and give way to more ‘modern’ ones. In any case, it gives every religion a passing value, because it is causing it to compare its beliefs with an ever improving scientific world view. This might lead to some especially absurd results in the case of ‘dogmatic’ religions, since they build their worldview from first principles and the result, of course, might be in sharp contrast with reality.
Question three, on the other hand, is what I would call ‘the reason to be religious, even if it is not true’. This is the social component of every religion and it gives the guidelines what is considered to be acceptable behavior in a society. This is also the reason why different religions are associated with different geographical, economical and political communities.
I apologize if this was quite a departure from the theme of the topic, but I felt I had to give my say on the matter in the best way I could. I didn’t mean to offend anyone because of their personal beliefs.