Why it is not a Grenzsituation to participate in a continuous regeneration treatment?

For first readers: The aim of regenerative medicine is to regenerate all tissues and organs of the human body with the help of stem cells’ regenerative potential. Theoretically if all tissues and organs of an adult body were regenerated once, then it could be regenerated two and eventually n times. This technological possibility is called partial immortalization.

Let us turn to ordinary morality and ordinary, first hand moral intuitions. The focus here will be on the level of the individual, and not the direct human environment of the individual (family, colleagues), or the society in which the individual lives. Contrary to the supposed intutition we try to show, that it is not a boundary situation (Grenzsituation) for the individual to participate in a continuous regeneration treatment, than we could think at first sight.
In a Grenzsituation, per definitionem, the life of a human individual (or a community) is in real danger. „The „limit” is the boundary line between life and death.” A Grenzsituation occurs only once, it is not repeated at another time, the individual will win or lose. Thirdly, a Grenzsituation is a short interval, the participant individual usually has an intensive experience, and the situation deserves some strong gestures and moral top condition.
A typical Grenzsituation could occur in war, in slavery, in a concentration camp, or in an euthanasy situation, but not in an average working day in a liberal democracy. Now imagine again an adult individual under the decision, whether to participate in a partial immortalization treatment or not, or just imagine an individual under regeneration treatment, and his/her next time to go to the clinic. First, this won’t be a boundary situation for him/her, because it is not a choice between life and death, but a choice between life and life, between an average life expectancy and a partially immortalized condition. Second, this hypothetical scenario of the treatment requires continuous, recurrent choices and decisions while a Grenzsituation is a unique one-time event, as mentioned before. Third, the treatment does not require high moral sensibility and spectacular gestures. The maximum moral intensitiy probably occurs when an individual first decides to go to the regeneration therapy, but we could hardly say, that this means his/her whole life is in danger. So immortalization does not seem to be a Grenzsituation for three reasons, and morally on the level of the individual under treatment it is not necessarily a source of moral conflict. Moral problems arise when we turn to the direct human environment of the individual (family, colleagues) and the society in which the individual lives.