I havent taken it all off but probably would if i wasnt worried about 3 things
Ingrown hairs
Stubble
Growing in thicker
The trick is finding a nice balance between 12yr old boy and something denser than the population:size ratio of japan.
To some guys probably just learning that guys can do this, be nice.. take some scissors to the mop, a penis aint attractice and a fro doesnt help any (and you'll probably "increase" about an inch in length)
I keep mine trimmed down pretty low, and have debated putting patterns and such for shits and giggles. If anything it would be a lightning bolt i think....