James Patterson, not so much

Why does James Patterson bother? From reading the New York Times profile, I've learned that he has five "co-authors" who actually writethe books he drafts. He skews his plots for marketing purposes. He's abandoned his early literary potential to write sadomasochistic rape/torture thrillers. And he does this why? Don't get me wrong. I'd love to have tons of money. But if that were my main motivation, I think I'd have gone into a different profession - plumbing, for example. I write because I want to write. What James Patterson does? Not so much...