On a Pale Horse

I first read this book, On A Pale Horse by Piers Anthony, when I was in high school at the recommendation of my friend Beth, who LOVED Piers Anthony and my high school boyfriend, Jacob, who said this series was the only good stuff by Piers Anthony. I don't think these are the only good books he's written, but they are the best, and this one is the best of the best, by far. The premise is --what if Death were a job? The book opens a magically enhanced version of our world, with Zane alone and in despair, trying to kill himself. However as he sees a corporal version of death approach him (think hood, skull, scythe) he panics and turns the gun on him, killing Death instead of himself. By doing this he assumes the office of death. Zane tries to fight this, refusing to reap souls, but eventally embraces his role (sort of), sorting through the souls of those who fall somewhere in the middle of good and bad. His pale horse, Mortis, changes from a steed to a car at the flip of a button and he has a computerized system to help him in his work. There is an entire series, called the Incarnations of Immortality, which include time, nature, fate, war, and good and evil.