Only if it's actually available to every living human on Earth, which unfortunately isn't the case for plenty of things we already have, like food, clean water,

Only if it's actually available to every living human on Earth, which unfortunately isn't the case for plenty of things we already have, like food, clean water, medical care and so on. Kim Stanley Robinson's Mars Trilogy[1] books explore what longevity treatments for some but not all could mean (along with terraforming Mars, and lots of other great stuff, that is). 1: https://en.wikipedia.org/wiki/Mars_trilogy https://en.wikipedia.org/wiki/Mars_trilogy