It's similar to why you'd play basic offense. If you don't have a stand out player, or your bigmen/guards are both equally good offensively, its good to play basic offense. If you want to play basic, but think you can tire out an opposing team via increasing possessions, it's a good offense to use. It's also good if your team has good Stamina, since you will be able to speed up the game, and make the other team tired, when your team isn't.