Dad wasn't always a Rand zealot. He was raised in a Catholic family and went to church every week. After he and my mother got married in 1982, they shopped around for a church. He was looking for something to live by, but he couldn't find it in traditional organized religion.(Via The Marriage Debate) Share
Then he discovered objectivism. I don't know exactly why he sparked to Rand. He claimed the philosophy appealed to him because it's based solely on logic. It also conveniently quenched his lawyer's thirst to always be right. It's not uncommon for people to seek out belief systems, whether political or spiritual, that make them feel good about how they already live their lives. Ultimately, I suspect Dad was drawn to objectivism because, unlike so many altruistic faiths, it made him feel good about being selfish.