We've worshiped GOD in many forms in the past : animals, persons, stones, sun, ...
it's clear for me that god lives is only in our heads.

the real god doesn't think, doesn't judge, doesn't punish ... The real god is the nature, the universe, us.

We are part of god, we dont die, we only change continuously to something else.

NO.... the same way you can not prove the it exist either....

its simple if u need the answer to this question and many more u can get it from the Qur'aan it explains everything.