ok, personal anecdote, the guy my wife dated back in '06 while our marriage was on the rocks shaved his testicles. he really enjoyed the clean feeling. he was also into having his balls licked and sucked, so she was pretty happy with it.
if your significant other isnt into playing with your scrot, or you do not like to have your balls licked/sucked, then it comes down to a matter of personal preference. if you do it, you would need to keep up with it, because when it grows back it will itch like a mother fucker.