I think the 'good' gods are recent - for a given value of recent - and they are supposed to have a reason for everything, right? But many gods were - and are- simply forces. Not specifically good or bad, just there and very powerful.
I am trying to come up with a religion that hasn't gone that way..Hinduism? Buddism?I think history shows us that every religion ultimately devolves into dogma and rigid disciplines. They split into two or more groups when one side thinks they aren't being dogmatic enough. They are, IMO, essentially bad. Individual FAITH is good, maybe, as long as you don't deny reality with your faith.