Dear Optimist, why are all things inevitable inherently bad?

For example, war is inevitable… it might be good for business but it’s definitely bad for people. Death is inevitable, like it or not we’re all going to die. Global warming, animal extinction, super volcano eruption, an asteroid collision and of course let’s not leave out the fact that one day, inevitably the sun will go supernova and everything that is and all that there was will cease to exist, gone in an instant.

Everything else is just make believe.