How can the cost of living another moment (barring shit that makes you ask for euthanasia) EVER outweigh the benefit, to ME?
I might outlive my usefulness to YOU, or the Machine, but that's notnthe same. Is it?
I wanna LIVE!
I find that trying to put an economic value on life hardly ever leads to 'good things'...
Actually, there are cases where the "cost" of living longer outweighs the "benefit" to the person doing the living, it's just not this linear bullshit clownshoes threw together.
For these purposes, let's call "benefit" as "positive experiences of being alive" such as interacting with other humans in pleasant ways, thinking interesting things, masturbating, etc. "Costs" will be "negative experiences of being alive" such as physical pain, emotional pain, and burdens on other humans.
If you're in a coma, you are not enjoying any of the benefits of being alive. There is a chance that you could regain the ability to do these things at some future date, so your "benefit" isn't zero, but it's not very high. If you're in a very stable state, maybe the cost to other humans isn't that high, and you're not in physical or emotional pain, so it's kind of a 50/50. If you're on lots and lots of expensive life support, and the chances of a recovery are even closer to zero, that math changes.
If you've been shot in the face, the cost to you of continuing to live is extremely high. But even this extremely high cost could be outweighed by the benefits of surviving to do fun things again. If you are in agonizing pain due to a deteriorating, untreatable condition, you have an extremely high cost of continued living and minimal benefit (since you don't have years of potential life left to fight for).
Twin brothers who were born deaf stayed close throughout their adult lives. They enjoyed their life together and made the most of it. When they were both diagnosed with an incurable condition that would render them both blind, they chose euthanasia. The cost of continued living without being able to communicate with one another was too high for their tastes. Whether you agree with them or not, they did that calculus.
Of course, all of this is hanging out in dangerous waters. Do you want mentally ill people trying to do this math? (protip: depressed people can't do math). Do you want the government doing this math?