I think that's a reasonable parallel regarding justifying unhealthy behavior, even if the child abuse aspect is a non-sequitur (?). I might have given the impression that I'm not in favor of changing things, but that's not the case. Our form of Capitalism does suck, and I am perfectly in favor of making a change away from what we have now.
My point wasn't that what we have now is the best it's going to be or that why change anything because whatever we have is imperfect, because that's a jackassed excuse used to justify indolence. There's no catch-all solution to humanity in the form of government. If and when we do change the way things are done, we'll still need to be vigilant against the same problems. By all means let's do our best to make things better than they are now, whether that falls under the name of capitalism or no is of zero concern to me.
Material conditions and incentives affect people's behavior, for sure. But if it was the impetus, we would stop once we had enough, or even an excess. We categorically do not. The people who manage to avoid this tendency are not the norm, and that's not because of our American culture or Capitalism. It's happened under every system and every creed, given enough time. Humans themselves are the common factor, not Capitalism itself.
I do agree that our current state of Capitalism both encourages and idolizes these aspects of ourselves.