Doomerism is a perspective and a set of ideas. Those ideas may well be a response to predictions about the future, but to pretend that they are the only possible response is very silly. You have control over your response, and you are responsible for it. It's not just something unavoidable that happens to you, and it isn't without consequence either.

Yes, the world is indeed on a dark path, one that is unique in our history. No, that path's end is not absolutely determined yet.

Imagine living thru the fall of Rome, the ravages of the Bubonic Plague, or the colonization of the Americas. Absolute apocalypse wherever you turned. Yet some people managed to maintain their sanity and ethics. That is our job right now.