"Show me just what Mohammed brought that was new, and there you will find things only evil and inhuman, such as his command to spread by the sword the faith he preached." - Manuel II Palelologus
Cults usually don't approve of free-thinkers. That should lead you to a definite understanding of Islam. When a uneducated Mullah...with no understanding of the world...tells you that a bunch of hottie virgins...72 to be precise...are yours for the taking...if you just kill some people...then its a cult. End of the story.