Why did the Pistons trade Chauncey for AI

I’ve been a fan of this team for most of my life, I was a kid during the Grant Hill years and a high school sophomore when we won in 2004. It seems that ever since we traded Chauncey we have been cursed and I still to this day do not understand the reason we traded him for Allen Iverson. It seems like the downfall of the Pistons goes back to that trade. Anyway, we suck and rant over.