I wouldn't not say that the "man" of today is a natural predator of deer like we were in the past. And face it... most Canadians do not hunt and most do not eat deer for the heck of it, let alone to survive. To most Canadians nowdays, deer are cute unless you whack 'em with your car. Our urban sprawl have encroached their land and they now have to adapt. Let me also add that we've killed off coyotes, wolves and cougars here in Ontario, all who still to this day would find deer a great source of protein.
I do agree that deer hunters -- for the most part -- are excellent conservationists.