Bonjour Monsieur,
Fear of death is a powerful motivation for all conscious creatures. Accepting my own mortality was the hardest adjustment to be made when I left Jehovah's Witnesses. I have debated with many Christians and they inform me that their belief in God has nothing to do with self preservation or the reward of an after life. I accept that they sincerely believe this. At the same time I tend to think that their own motives are hidden in the deeper recesses of their mind. I would like to share their faith but alas, I am unable to.
Muslims seem to be fully aware of what motivates them. The men live, and it seems die, so they can be with Allah and have a dozen virgins each in heaven where they will only have to live with fellow Muslims. Sounds good to me, except Allah don’t talk to pagan gladiators. .