If we're talking about Yahweh specifically, he even left evidence that shows he went from a god in a pantheon to the current supposed "one and only" god.
All the pantheistic religions are more interesting than monotheism. They're still 100% bullshit, but monotheism is like having a D&D character with maxed out stats and skills across the board - they can do everything, but there's no creativity or challenge, so it's just so boring.
And monotheism is also a lot more poorly-thought out - the Ancient Greeks didn't have any "problem of evil" because their gods were assholes just like people are. Asshole gods or no gods both make a lot more sense than all-powerful, all-good god.