Your comments made me think of the theory of symmetry in nature. It also made me think of Malcom’s comment in Jurassic Park, “Life finds a way.”
As the human race has continuously found ways to extend our life span, nature has continuously acted to counteract it. Balance, I suppose.
As a father to a young child, I just hope things end up being okay eventually. I now know how my parents felt as they watched me grow up, and I hope that things blow over like they have in the past. Nevertheless, I’m taking the “Optimistic, but prepared” route. Trying at least.
Humans have one "curse" the rest of the animal kingdom do not: we are cognizant of our own mortality. We know that one day, we will be recycled into that "circle of life", and there is nothing we can do to prevent it. All we can really do is postpone it as long as possible.
I like the Braveheart message William Wallace reiterated: We all die. It's only a matter of when and how. It's one of the truest things I've ever seen out of Hollywood!

According to Biden, millions of Americans died from COVID .... or hundreds of thousands .... he can't really remember. I look at it as "these people's time was up." If it wasn't from a virus, it was going to happen by some other means. You can't cheat death.
I'm always optimistic, but I temper it with reality, too. As they say, plan for the worst and hope for the best. Not much more you can be asked to do.
I think old age is another one of Mother Nature's "clubs". If everyone had the capacity to live 200 or 300 years or more, overpopulation would be starving us to death. Once the aging process stops repair of tissue, the body develops pains, aches, and "chronic conditions". Even without disease, most would not want to go through another 50 years in the same condition they saw at 75. I think most people have a notion that a longer life means your best years are also lengthened. Medicine and technology helps, but you're not going into that second century with the body of a 25 year old!
Back to the symmetry and balance comments. It's a common theme in most apocalyptic stories that the mass death of so many is nature's way of correcting an imbalance or other problem with the natural order. Natural selection.
The dinosaurs were unavailable for comment.