A pessimistic or at least skeptical dialectic counterpart to the optimistic/progressive worldview is a valuable thing to have, I think.

You can't reach into people's brains and change their temperament (yet! say the optimists) but I don't think we should want to. And not allpessimism/skepticism is based on temperament, though certainly some is.

That's a very anthropocentric view. We have a single point of failure. It's not likely to drastically change in any reasonable time-frame.

Yes! Reading tip for the the pessimist: https://www.amazon.com/Factfulness-Reasons-World-Things-Bett...

Speaking of pessimism, i just hope we humans destroy each other before we destroy earth to pave way to species which is not so hell bent on personal over society.