How not?
You asked what it would take for me to stop believing in God, i.e., the divine. Now, I'm polytheistic, and my beliefs about the gods are very different from others. What would it take for me to stop believing in the gods? My answer is a great deal of arrogance.
Ah, sorry, it appears that I didn't word my question clearly enough. My fault.
My question was more intended to be "What
evidence would it take for you to stop believing that gods exist?" I have amended my original post to clarify that.
Is it safe to assume from your answer that you would need evidence that humans are the most complex life forms? If so, what evidence would convince you of that?
Also, given your definition of gods as "simply more complex forms of life", would you view smart people as gods in relation to stupid people? Or perhaps physically talented people as gods in relation to physically handicapped people? If aliens came to earth who were only marginally more complex than us, would you consider them gods?
Basically, how much difference in complexity is necessary for you to consider a being a god?