I try to keep my bush well-trimmed on a semi-regular basis. I use Nair on the sack, crack and shaft* areas for safety and efficiency purposes, and just haircutting scissors and an electric trimmer for the main crop. For that I try to keep it pretty low, but I don't really shave all the way down unless I'm feeling adventurous. It usually just ends up being itchy anyway, though.
* Nair recommends you don't use it on your genital areas because of the potential for it to cause skin irritation or something like that but I've never had a problem since I started using it about three years ago. But while we're on the subject of smearing goo all over your crotch, I don't advise anyone putting anything like Icy Hot or Biofreeze down there.
P.S.
"You can see more tree with less leaves, so
Why must we leave it overgrown?"