Mere Christianity is trash. Couldn't even get through the first chapter because he calls out atheism almost immediately and basically says it's not even worth discussing because it's stupid and not an actual philosophy, which just strikes me as pure intellectual laziness, especially in a book about religion. Avoid, especially if you're an atheist trying to approach religion.

Mainly because knowledge about Christianity is the most physically accessible to me, as I am a next-door neighbour to a Theology professor of New Testament.