Actually, I do think the reason a lot of Christians are Christians is because it takes a lot of time for someone else to deconvert them.

To deconvert a religious person with a high school education, you usually need to touch on a lot of topics: the scientific method, beliefs and evidence, anthropics, biology, evolution, the problem of evil, cosmology, reductionism, and cognitive biases. It takes time for people to explain and comprehend all these things.