An absolutely terrible and tone-deaf way to phrase that thought, but the fact of the matter is that most of the world (you and I included, in all likelihood) will not get access to this sort of thing in our lifetimes. Not because modern medicine won't have been there yet, but because our lives (and those of our children) are simply seen as being worth significantly less than a rich person's desire to become richer.
How many people can even afford to get multiple opinions for a weird lump on their back? Or go to the dentist for a strange toothache? How many people can afford to get consistent exercise and eat healthy? How many lives would be saved or at least massively bettered? We already have the means to extend the life expectancy of the average person, and it's not being used. Obviously this is a wonderful medical advance, but it's depressing to wonder who it's for.