Writing gives you the opportunity to play God or make gods. You can play Satan too if he’s more interesting. Get any power you want, imagine a cure for any disease, create entire worlds, or ruin someone’s life at the cost of some mental power and time.
Here’s the kicker: if you write well enough, you can even be immortalized on Earth in a form people will either cradle to their hearts or whip across a room. You have the ultimate control, so write and enjoy it.