Why do we shave what exactly?
Facial hair will always be a plus in my book. I mean beards don't sprout for no reason. It's there to serve a purpose. It protects men from the sun, it helps prevent blemishes, and it also traps allergens (what do you think nose hair is for).. Hence why men generally age better than women.
IF you're referring to DOWN THERE, then idk. I think a trim is necessary, but I don't see the point in shaving it all off unless you your **** needs all the flattery it can get.