As I understand "state of nature", Hobbs invites us to consider what life would be like in a state of nature, that is, a condition without government. Perhaps we would imagine that people might fare best in such a state, where each decides for herself how to act, and is judge, jury and executioner in her own case whenever disputes arise—and that at any rate, this state is the appropriate baseline against which to judge the justifiability of political arrangements. Hobbes terms this situation “the condition of mere nature”, a state of perfectly private judgment, in which there is no agency with recognized authority to arbitrate disputes and effective power to enforce its decisions.
I think the inherent flaw in this is that collective society can only work if we are governed by the same laws. Human nature is not a benevolent thing. Given a choice we always go towards self-interest. THe weak and innocent get trampled on. This is why we need government.