Well, The Devil just does that for a living, it doesn't define him. He is a good person for inventing everything that makes the world worth living in. Let's face it, without Satan, the world would be a boring place. There wouldn't be any good music, violent video games, or decent TV.
We should also thank the serpent that tricked Eve, without him, we'd still be running around naked in some jungle.
Well, considering the fact that just about every religion in the world is practiced by people in the U.S we should actually replace "In God We Trust" with "In God, Allah, Buddha, Odin, Thor, Loki, Zeus, Hades, Poseidon, Cthulhu, Yog-Sothoth, Azathoth, Ra, Anubis, Osiris, and Set We Trust" or something along those lines. or we could just say "In Every God We Trust".