If there is no unseen world (no spirit world), Islam would be cleanly explicable in the almost mathematical terms of rational thought (including plain old psychology and other behaviorial sciences).
But, of course, that can't be done, because Islam perverts what might be considered normal survivalist behavior. Islam is self-destructive (though it grows like a disease). Islam hates (and that is a perversion in itself). And what does Islam hate...it hates the mothers that bear us, it hates honesty and dignity and integrity and life itself. Islam hates all superlatives of the soul.
If there were no evil forces in life or spirit, Islam would defy all the rules of probability to suggest such things do exist. Without evil (human and demonic evil), Islam is the most remarkable coincidence. Islam achieves exactly what evil would achieve. It is the very thing that evil would design.
The question is...do such coincidences exist...or is Islam the result of Evil?
I look at it simply, DS.
I think Islam is possession by Satan, nothing more, nothing less.