No, you are not what I would call a knee jerk negative because reality does have a doomsday component to it that I have termed probability balance, the ultimate law of the universe. It is a very close cousin to Newton’s law of action and reaction, for every action there is an opposite and equal reaction.
The main difference with probability balance and Newton’s simular law has to do with time and intensity. With probability balance, unlike Newton’s law, time and intensity most always vary.
For example stars are born and stars die, with both the time and rate of birth and death random. The constant is that as with both the universe and humans birth is always offset by death. So now we can define probability balance as a law which states that creation and good, at some point in time must always be offset by destruction and what we humans would general describe as bad.
For instance in all of human history, at some point in time, peace has always been offset by war, creation offset by destruction and love offset by hate. This is because we humans as creatures of the universe cannot escape, no matter how hard we try, the ultimate law of the universe — probability balance.
What makes this time in history particularly unique for humanity, and I’m taking the last 70 years here, is that humankind's creations have reached a level of sophistication (thousands of nuclear tipped missiles on hair trigger settings) whereby the final offset of our existence as a species is upon us. In other words after the last several hundred years of humankind’s spectacular technical advancements it has reach a level whereby we have the means of our total destruction, and thus by the law of probability balance we have arrived to that part of the law of probability balance — at some point in time.
In fact that was made obvious the day that scientists created the doomsday clock. We are still in waiting mode, but as you have so elegantly stated the forces of offset are now screaming end. Damn that probability offset!