Whether or not you believe in God, you should live your life with love, kindness, compassion, mercy and tolerance while trying to make the world a better place. If there is no God, you have lost nothing and will have made a positive impact on those around you. If there is a benevolent God reviewing your life, you will be judged on your actions and not just on your ability to blindly believe in creeds- when there is a significant lack of evidence on how to define God or if he/she even exists.