Souljah brings up a very good point. We often think we are at the top of the food chain. Nope. There will be more and more antibiotic resistant bacteria and viruses out there. Viruses are especially adaptable....they can mutate easily so that treatment is ineffective. I personally believe that most antibiotics and antivirals will eventually (soon) become ineffective. The next real frontier will be genetic therapy.
As a society, we need to get better at dying. In America, we tend to think of death as more or less optional. All the technology, all the time, keep on fighting when there is no chance at winning the war. Shoot, we do open heart surgery on 90 year olds routinely (with VERY mixed results.) The vast majority of our nation's healthcare dollars is spent in the last 6 months of life. Often we do stuff the family wants so they can feel that they "tried everything" and we can avoid being sued. No matter that the poor patient may not have wanted it in the first place or that their prognosis was extremely grim from the beginning.
The age group with the second highest suicide rate is the elderly (over age 75.) Very sad.
"Unless you're sharing what you have, you don't have as much as you think you do."