This is a nice story , thank you for sharing it with us, as it holds many great ideas from your own personal experience.

You've said

اقتباس:Now the above statements say that I could believe in God only when I disabled logical thinking for a while.

also You stated:

اقتباس:Nowadays, I think of Mohammed solely as an Arab reformer who had a divine message from God that perfectly matched his own attitudes towards Mecca's problems.

and one of the things many should understand:

اقتباس:And I don't like the word ISLAM as it is a term developed by his early followers to reduce the only-basic and can-be-improved ideas he came with into a name to exploit for political and other reasons.

Regardless of the authenticity of the "Message of Muhammad" the political and historical environment that formed the current Islam should be taken seriously by Muslims.