Looking to switch to a quick and easy suspension and decided on just getting a strap, looped on one end for tree, then go through rings on the hammock end. No knots (unless you count the choker around tree), no hardware other than the rings.

My question: Could I go as thin as 3/8" or 1/2" webbing? Found this with a break strength of 1500lbs. Even with the strain calculated @ a 75 angle (much higher than usual) this is more than double what I would require. However, most people I'm seeing on here are using and recommending around 1"

Is there something I'm missing as far as strength goes? or is there a reason other than strength that webbing should be up to 1 in. ?