at hf128219. Reckon this is why ex did it.
Also to heighten sensation when balls stimulated - licked, stroked, etc. A very, erm, hirsute man might not feel so much down there otherwise.
The sensation reasoning I can understand, but aesthetically, I prefer it unshaved; I like what it says about the man - at ease with self, natural, not overly vain. But I am picturing the perfect penis in my head, of course, and I'm not a fan of excessive female trimming and plucking and shaving, either.
Each to their own, I suppose.