Not for those reasons. We may for other reasons but those are things we’ll be able to manage as they come along, if not via governments, we will via private citizens.
I don’t do “doom and gloom” much. I get frozen into inaction, into complaining-rather-than-doing mode.
But keeping a positive outlook for the future gives me the energy and drive to do things to make better futures happen.
So, that’s why I try to stay away too much from disaster scenarios.