We become that which we repeatedly do..
Yes Franster, life will continue, irregardless of the level of devastation but will life as we know it continue ? There a very convincing indicators that suggest that if we continue on the current path that we will revisit those dark ages. You are absolutely correct in stating that we have been here before so more than likely we will be there again. So goes the universal cycle of life and change..If Gaia(earth) was a dead pile of rocks and dirt i would worry.
Like all living things She will or is taking corrective actions.
Will we survive?.... very likely, we have survived Ice ages, volcanoes and floods.
If we(homo sapiens sapiens) do not survive, life and humanoid/hominids will continue....evidence(Ooparts and Petrodox) of exo-civilizations, or previous global civilizations are growing - Atlantis, Lemuria, Mu, and Hyperborea.