Divergent

The book doesn't make any sense at all as a cautionary tale (i.e. it's pretty unlikely that anyone will decide to divide society based on personalities), but if you instead read it as an allegory about growing up, things start to make a lot more sense. Tris grows up in a meek and selfless household with loving parents, but the restrictions chafe. She is given the chance to choose a different life with one of the other factions, but to do so would mean publicly rejecting her parents' way of life. Sound familiar to anyone?

It sounded familiar to me, and so I loved it.