I think that the question of God will never be cleared by man because then there won't be anything else to find out and motivations will dissapear.
Most of the past wars were based on religion though most of the remaining religions like Catholicism, Muslim and Jewish are passive ones. It is written in the saint books that you are not supposed to be violent or agressive towards others. However, men still use religion as a pretext to start a war. That's crazy!!!!!!
I don't have anything to say on this subject anymore. All my arguments just disappeared.