you want him to show you otherwise without first proving your points. man being motivated by fear to create god is a hypothetical. it could have been any number of emotions. it is impossible to logically prove your points so you have to fall back on the writings of people who also cannot prove their points logically.
No one knows what give birth to religion we can only speculate.
Obviously fear. What do you think sacrifices were made for?
The ancients made sacrifices to their gods in order to please them and thus avoid disaster. But the disasters they sought to avoid were due to natural causes they couldn't yet understand.
Not all religions have sacrifices so obviously you don't know what the fuck you are talking about and the sacrifices in some religions were not made to avoid disasters they were used as a way to ask their gods for favors.