Nobody's saying you should exclusively blame them. The whole point of the human experience is learning. We, as a collective, made a mistake and need to take a few steps back and establish rules to safeguard us in the future.

As an analogy, our body is cut open and the wound bleeding. We need to bandage the wound to stop the bleeding- this does not stop the body from getting cut again, but we will no longer surely suffer from the first wound.