weight distribution/sway or not

Boy, I don't know guys. With my 04 1/2 ton chevy I pull a 20 year old 20 foot TT. I had it on the scale and the numbers say I have 4580 lb trailer loaded with full water and all camping gear. I have 600 pounds on the rear bumper of the pickup. And, I'm reducing the axel weight on the front of the truck by 120 pounds. Now, I don't tow very far from home and I don't get in the interstate but, I have been up to 65 mph towing (I was in a hurry that day) and I have been passed by semis on two lane roads. Even on windy days and in every conditions I have been in I've experienced no sway and I've never had a problem. Those weight distribution hitches are such a big heavy thing hanging on the bumper. Right where you bang you legs on them. And they are such a pain to hook up and unhook that I don't see one in my future. Now, If I were pulling something longer, bigger, heavier, and further from home maybe it would be different. But, right now there not for me until they build a easier one to hook and unhook and take off of the bumper.