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One way or another, the issue of deception is not considered here, and the central topic of discussion is the moral dilemma.
In the first case, life as a whole is not very fair. Some are unlucky to be born into a poor family, some are unlucky to be hit by a car, some are unlucky to get sick with some nasty diseases, some are unlucky to die in a war they didn't need, and some are unlucky to "die because of a button" in exchange for someone else's well-being.
In the second scenario, it's one not-so-pleasant day in exchange for the opportunity to improve one's health, live comfortably for many years to come, and get most of what reality has to offer without any effort.