A photograph I took last year - an old bridge that was erected in the 1930s/1940s. It was torn down because repairing the bridge would have cost more than building a new one. Although the old bridge was far more picturesque, and was actually an iconic symbol locally, it was dangerous, unsafe, and a real pain for commuters. Still, everyone hated to see it go.
It struck me that a powerful lesson can be drawn from the story of this bridge. We humans have a strong tendency to keep things in our lives even when they're unhealthy - or dangerous - just because "that's the way it's always been". We don't like change, because it means that WE have to change. Altering our views from subjective to objective can almost literally be painful. Yet, we have to do it to grow, whether we want it or not - because it's gonna happen anyway.