SusurrusMy wife loves sucking on my balls, and Iike to think it's due to the fact that they're shaved smooth.
As far as the itching bit, I try not to shave too far into the crease between my sac and thigh, so I don't get the stubble poking into my skin. Also, my wife likes the smell down there, all sweaty and masculine (she says).
I know, if I got the chance, that I'd prefer a guy's balls be shaved if I were to suck on them...