There are so many things that will plague us earthlings in the future. Too numerous to mention. Our main problem is: There are too many of us. The earth can maybe support 3 billion, not 8 billion. This evolutionary "overshoot" will eventually be corrected. By "us" or mother nature. Your passage: "I belonged to an long-defunct outfit called the Church of Euthanasia. The four pillars of the Church were: Abortion, Sodomy, Suicide and Cannibalism. They had some great slogans: The World Is My Ashtray; God is Coming, Stick Out Your Tongue; Eat People, Not Animals. We don't need more of us!" I found both amusing as well as interesting. In my case, I found it always a waiste to bury our deaths to be eaten by the worms or to be burned (adding to the CO2 output). So I deposited my "last will", wishing that my remains should be converted to useful fertiliser and given to a local farmer. A week later I was summond to the probate office, facing 4 death experts, making it clear to me that legally something like this is not possibe and the clergy would not allow for this. I went on the offensive: If this is not legal, I suggested that my remains may become a part of a bar-b-que party. Referring to olden missionaries in New Guinea that were told by the locals that human flesh tastes quite good. With or without ketchup. 😉 That was the time when the death experts eyes started to roll and meaningful murmerings ensued. A minute later I was basically thrown out of the probate office. End of story. It actually happened as told.