Alligators don't generally attack people either. Their normal behavior, is to submerge and swim away, as fast as they can. Those who have been fed, may be bolder, but still rarely attack.
Several years ago, I was on a 3 day canoe trip across Okefenokee Swamp. About half way through the second day, we came to a large downed tree, completely blocking the trail. There was no choice, except to get into the water, and drag the canoe over the trunk. Almost immediately, a large gator swam over, opened his mouth, and began bumping me in my legs. It was clear, that he expected to be fed. He thought he was the "toll gate keeper." I kept tugging on the canoe with one hand, while using the other hand to try to keep a paddle between me and his huge gaping mouth. Meanwhile, my wife was throwing hand fulls of Cheetos into his mouth. It was the only food immediately available, but it seemed to satisfy him.
It was clear that he was used to being fed. Despite that, there was absolutely no indication on an attack.
Joel