The realization that much of the bible was written by and for people who kept other people as property, considered all women and children to be property by default, and was itself - at least partially - an attempt to justify this practice through religious sophistry is what led me to become an atheist when I was growing up. I started reading the bible because I was confused and wanted moral clarity, but it turned me off of Christianity entirely, even though I do still hold some fondness for the story of Jesus.