What would be really sad is if there were brain parts we didn’t use, and we hadn’t used them for thousands of years, and now the potential superpowers are gone and they’re just vestigial lumps of meat.
One possible reply: If you take something you already have, then you end up with twice as much of that thing. If you already have an apple and you take an apple, you have two apples. By this logic, taking your own life would double your lifespan. (But first you’d have to find someone who had another copy of your own life that you could take.)
Happy wedding anniversary, John! We’ve been married for four years now. According to some list I found online, we’re supposed to give each other fruit or flowers on this anniversary. Let’s just have sex instead, okay? Sex organs are the animal equivalent of flowers anyway.
(But let’s do it without the animal equivalent of fruit, which is pregnancy. My love for you is seedless.)