I shave my face rarely, really only shave beard because ot looks like **** on me, but I keep the moustache because I actually like it.
Anyway I shave the groin area every few weeks, but not for looks. One of my many faults is that that area pretty much turns into a tumbleweed whereas I couldn't grow proper facial hair until I was eighteen. (TMI) It gets so long down there that it actually gets uncomfortable to walk (TMI), so I have to shave it every three or four weeks, and it grows back very swiftly.