3 simple points to end the discussion with any Sunni/Shiite

[Jehanne]

The view of Hippocrates shows that there were opinions other than spirit haunting circulating. Moreover, the charges against Mohammed by his criticizers incliude:
1-insane
2-liar
3-magician
4-warlord
5-epiliptical
6-child rapist

The list above is more of a stream of insults by a mob if you ask me..not an authentic conclusion from the reading of history.
Eventually this man was the starting point of a religion that has more than 1 billion followers, and they're increasing day by day.

Twice nothing is still nothing.  Or, for that matter, a billion.

I see Mohamed as being on par with Attila the Hun.  Yes, he was famous, but for all the wrong reasons, some of which you list above.  General George Sherman was a great Union general, but that does not change the fact that he was also a (unprosecuted) war criminal.