The evolutionary factors which lead to the complex social behaviors may make it possible to believe in we cannot explain especially those that provide a positive feedback in our neurological system. This may help in cooperative behavior and it may make it easier to believe in a god or goddess or spirit but science cannot predict the belief in "god". It also cannot give any proof that you cannot be an atheist. It only explains at best that we have the capacity in believing in things beyond our explanation. When people connect it to believing in god or any specific belief it creates a connection that is not supported by what is known. This can be interesting speculation but when it is presented as fact becomes a negative use of the information. There has been speculation on whether chimpanzees have behaviors that suggest ritualistic like pattern thus may suggest possible support for some aspect of religion. We have seen how both birds and mammals are affected by death of one of their own. Whether this is the beginning of religion with similar behavior patterns to humans is very interesting but no one has suggested yet that they have religion.
