Running Towards the Gunshots: A Few Words about Joan of Arc was the first thing which gave me a feeling of why anyone would want to be Catholic. However, that's the emotional side, not the arguments.

tl, dr (and be warned, the piece is highly political): Joan of Arc is the patron saint of disaffected Catholics-- not only does the rant give a vivid picture of what it's like to love Catholicism, it's so large and so old that there's a reasonable chance that it will have something to suit a very wide range of people.