It's difficult to wear some ball bondage/stretching gear, like a parachute stretcher, while dressed. In part, gravity plays a role, so clothing, at least street clothing would interfere.
Aside from the erotic, aesthetic, visual aspect, stretchers can increase the elasticity of the scrotum and connective tissues. Done properly, it is a pleasurable sensation, and can, over time, increase one's "hang."
Most of the time, stretchers are "behind closed doors" gear, in the bedroom, playroom, or dungeon.
My wife DIDN'T give me a choice.
She loved to squeeze a ball or both balls as hard as possible.
Then French kissing me and as long I responded that kissing passionately, she knew that she could continue.
Till the moment I couldn't bear it anymore.
This moment she used to ask me if I still love her.
My answer was always yes.
My MISTRESS loves to strangle both of my balls and pull them out as far she can.....then drag her teeth up and down my shaft......it makes me super hard..