I DON’T consider myself a doomsday-monger, but based on other historical collapses and the actions of our species over the past hundreds of years, I would say it’s not a matter of if, but when, our civilization collapses. To me, this is being realistic. Even NASA agrees:
The only two scenarios that do not kill everyone…are the ones in which birth rates are either strictly controlled or “resources are distributed in a reasonably equitable fashion.”