Do you think God really exists?

Put aside our differences, our ethnic opinions on a particular religion or faith, speaking on a general plateau, do you think there is a God, i mean a true God, the almighty, or, is religion just an invention by many genius and great minds who predicted and knew that without religious laws and restrictions, constitutional laws would just have been nonexistent and that people would not really have been behaving like civilians and that the world would have been condemned without religions??? Most of us have faith in the religion we were raised with. For instance, someone born in a family with a particular religion, would most obviously follows it, lives and die with it. We protect and defend that belief. Very few have chosen another religion that has not been imposed on him or her since birth. All those religious oppositions and conflicts that has been going on for so many years, all those hatred and dislikes, all those pain and sufferings, casualties and loses from war between religions, do you think life would have been much better and more peaceful without religion? Does God really exists?