That is terrible logic. Old people die off? You do realize that there is more than 1 generation of old people? Old people isn't some new thing that just started happening? Human population grows at an exponential rate. That means it is always increasing, and the more it increases, the faster the rate of increase gets. Earths population will never decrease by a noticeable amount without anything short of a zombie apocalypse or divine intervention. Maybe a nuclear war. That old people dieing is going to cause earths population to drop is the dumbest thing of the week that I have seen on this site, hell you might even pull idiot of the month with that statement. People are born almost 3 times as fast as people die.
We always create cures for disease and stop wars form happening and find new ways to solve conflict without casualties, yet the same people who say this is how humans should be say the earth is overpopulated. Stop lifting a finger to save another life, and you will be harming humanity, saving the planet. If hippies truly wanted to save the earth, they would end humanity, then the earth could survive. As long as were on it, the planet has a death sentence, or at least we have a death sentence of how long the planet will support us, millions of species don't exist anymore, things go extinct every day. We need to accept that we are nothing but another species that will go extinct eventually, and the planet will be here long after humans are gone.
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Not up to date, but gives the general idea