One thing that struck me as ironic in The Metamorphosis is that the Gregor becomes a cockroach. I don't know about you guys, but when I imagine metamorphosis, I imagine a caterpillar transforming into a beautiful butterfly like happens in this wonderful scene from A Bug's Life:
Obviously, the book is about, at least so far, Gregor's change from a human to a cockroach. Metamorphosis can be seen as a simile for change, which could be a possible/probable reason behind the title. Do you think there's any deeper meaning or relation between the title and the fact that Gregor becomes a cockroach?