We are all but a fragment of Arceus' breath as he sleeps. The creation trio makes life. The lake trio endows said like with it's sentience and feelings. Yveltal then takes said life, so that the Creation Trio can create anew. And when Arceus awakes, we we will all be gone.
Rarity is best Pony. Yes, I'm a Brony. No, I'm not gonna try to get you to watch the show or dislike you if you don't. People can like different things.