What's the last time you met a gatherer doing it as a profession and not a hobby?
Hunters are a little bit more common, but still, full time food hunters are rare.
Prostitutes on the other hand.
So as a simple saying used in a daily life, I can kinda see why it's used :)
Until your daughter comes home with a boyfriend with a fucked up sense of what sex is and ruins her day/week/month/year/life.
I'm certainly not pro government tracking anything I do, let alone porn watching, but if I see how my own kids get exposed to it through friends. No matter how much I try to educate them, friends still show them absolute vile stuff...