The no huddle offense is the best way to effectively and strategically call plays. Ninety percent of coaches will just call a play that they think will work.
That is pretty much just guessing. Say you call a sweep play, and the defense comes out and is aligned perfectly to stop it, what do you do? You are stuck running a play that goes right into the teeth of the defense.
There are occurrences where your athletes will bail you out of a bad play call. When you do not have a dominant team the no huddle offense becomes even more vital. If you are facing a superior team, calling the right play at the right time is absolutely vital.