I'm not sure, but what may be happening here is that people who are more into people photography are "emotionally" involved in that and like pictures of people, and the photographers that get an "emotional" charge out of landscapes are into photographing that.
Perhaps that is why we photograph what we photograph. One group does landscapes and the other does people.
We are trying to get each other to "experience" what we are feeling when we feel different things than each other.
Not a problem for me. You say potato and I say patato.
As a friend of mine used to say, "that's what makes a horse race".