Apocalypse Panel Question #2: Why draws me to write apocalyptic stories?

It's time for the Apocalypse Panel again! This month's question is a little less nightmare inducing. :)

What draws you to write apocalyptic stories?
To be completely honest, I'm not sure I am drawn to write apocalyptic stories. But I can tell you why I felt drawn to write Defenders of the Covenant, which features apocalypse-by-alien-invasion. This is from my website:

I first came up with the idea for Defenders of the Covenant while pondering the question of how far I would go to keep the covenants I have made. I take those covenants very seriously. What might I be asked to sacrifice? My life? Something harder? My mind churned up a worst case scenario of an alien invasion and a mother asked to give up her child to save the human race. That led to the short story which eventually became the novella, Consecrated.

I was fascinated with the "what if" behind that story. What if aliens invaded Earth? How would my church react? That was the basic grain of the novel.

For me, I wasn't thinking so much about the end of the world as I was about faith. Writing about the end of the world is an excellent way to delve into concepts of faith and loyalty and all sorts of things. Will I write any more apocalyptic stories? Hard to say. I don't have any in the works right now, but I never what sort of ideas are going to rear up and take hold of me.

What do you feel drawn to write?
Be sure to check out the responses of the other panelists!