Ive started ball
hanging a few months ago,reasons why,i have always had tight balls that were really close to the shaft,this make my dick look smaller than it is when flaccid,also i like my wife to play with my balls during sex and having lower
hanging balls will hopefully make it more enjoyable.
I don't see the attraction of really low hangers myself,as in several 5-6 inches but i would imagine its a sexual turn on to some.