I am not convinced that they will solve the problem of aging in that time. But supposing that they do, and supposing that it was universally available, it would be disastrous for the population problem. Right now, there are too many people, and this will only make matters worse, because people will not willingly stop breeding.
With greater populations, life is held to be cheap. Look at the most overpopulated counties now (e.g., China) and you will see that human life is not given a high value. That, and worse, is what we will be facing if the population continues to grow.
So, unless this comes with forced sterilization for those who get to be "25 forever," life will become a living hell for the vast majority of people. Just think how many children one couple could produce who are "25 forever," and you know that some religious nut jobs will reproduce like rabbits.
Additionally, one of the advantages of people dying off is that this aids in progress. Think of all the racist bigots from the past who are now dead, and think how society would be if they were still alive. If this sort of "immortality" comes to be, it will hold back progress.
With greater populations, life is held to be cheap. Look at the most overpopulated counties now (e.g., China) and you will see that human life is not given a high value. That, and worse, is what we will be facing if the population continues to grow.
So, unless this comes with forced sterilization for those who get to be "25 forever," life will become a living hell for the vast majority of people. Just think how many children one couple could produce who are "25 forever," and you know that some religious nut jobs will reproduce like rabbits.
Additionally, one of the advantages of people dying off is that this aids in progress. Think of all the racist bigots from the past who are now dead, and think how society would be if they were still alive. If this sort of "immortality" comes to be, it will hold back progress.
"A wise man ... proportions his belief to the evidence."
— David Hume, An Enquiry Concerning Human Understanding, Section X, Part I.