Part of the scientific temperament is this tolerance for holding multiple hypotheses in mind at the same time.
I believe in past lives but I know nothing about mine and I don't want to know. I live in the present, taking one day at a time.
To place oneself in the position of God is painful: being God is equivalent to being tortured. For being God means that one is in harmony with all that is, including the worst. The existence of the worst evils is unimaginable unless God willed them.