In the end, I figured that people take a number of stances on a number of things and a variety of factors can lead to them sticking with them or changing up, but underneath I think the real political point everyone really endorses is survival.
Different people have different methods of survival. Some hoard against loss. Some want to defend what they have. Some people want to band up while others prefer to be loners. Some trust too little and some trust too much. There is a variety of ways this can manifest, but I think it is the survival of not only the individual, but of things like groups, organizations, cultures, legacies, ideals, and the like that form this great tangle of interests that underlie all political struggles.
It's a simple argument. Some people say things that are too simple are bound to be false while others say things that are too complex should be much more simple. I don't know. I get the feeling this great cacophony, at it's roots, has simple origins.