I have thoughts like this too, but at the end of the day is there anything that you can do directly about it? I feel like there are more levers we can pull as individuals around so many other issues that do directly affect us. Worrying about global nuclear war is as much a waste of my time as worrying about an asteroid hitting the earth, but I can worry and actually do something about picking up trash in my community, being a positive influence in others lives, little stuff like that.