One thing that has kept twigging at me over the last few years is blasphemy. If you consume popular media (film, TV, books), in general life, and in online chatter, you are exposed to a constant stream of blasphemy; by people who are, at best, vaguely aware of Christianity. Why is it that people blaspheme so much? It strikes me, as despite the large levels of anti-Christ we can find all around us, people cannot stop invoking God and Jesus, who they generally don't (really) believe in, and may be aggressively against.