The dismally tiny and shallow scale of human deity worship is what convinces me that it is all simply a result of ongoing human development, an inevitable phase.
It's all focused on us, the god(s) are like us, the universe of religion revolves around us. It is infantile. It is an ignorant savage's crutch to both encourage his endeavors to survive and his excuse when things just go wrong. It is also the more educated, clever manipulators' tool to gain power, wealth and social/political prestige and dominance over others.
Reality is just so vast, fascinating, astounding, terrible and beautiful, that the more we learn, the more I find it a crime that people's minds are cramped and cowered by religion. Some people see it as depressing, that the universe is so indifferent to us. Indeed, we should be grateful we are intelligent enough to actually see and want to know more about the universe. That we exist and can be sentient and be curious and brave and adventurous is what is miraculous, in what is only so far as we know YET, an unoccupied glorious vastness. That yet is easily the most exciting and wonderful reason to be glad to be human. I wonder who we will talk to some day? I don't think they will visit physically, because space/time physics are impractical, but communication may someday happen. Hope I live to witness that.