I became an atheist and hardcore antitheist when I was somewhere in the range of 10-12 years old. I blamed religion for all of the world's suffering. I'm still an atheist, but I've relaxed on the outright antitheism after becoming a Marxist in my mid 20s.
I still think the ideal human society would be free of religion, but I no longer think it's something that can or should be changed through brute force.
I remember reading a quote recently regarding materialism and religion. Something along the lines of "the existence of God is the material reality in x country." If someone knows what I'm talking about, please link it