[pipio21]

While it is obvious that everything decays, it is equally obvious that you can repair it.

For me eternal youth will happen sooner or later, probably 100 years in the future,50 years,200, but it will happen when we understand biology and could repair tissues, something that we could not do today. Today we don't heal a bone fracture, we let nature do it, because we really do not control or understand the process deeply. The body knows how to kill viruses, we do not. Only bacteria after copying nature with antibiotics is under our control but we do not control or understand the process again.

This is not being immortal, people will die in wars, or accidents, or being killed, but they will be young all our lives.

For this people will probably have to go to a place that resembles the uterus and spend some time there as the body repairs itself:

https://pm1.narvii.com/6320/0940afb810563b4c4b67c4efb773adc0...

After that you will be 20 years younger. Not different from repairing a car.

[FooBarWidget]

We can't even repair our own machines to the point that they last forever. I doubt we'll reach eternal youth any time soon, so I do think that we can lengthen life span quite a bit (low-hanging fruits) before we hit a wall that take even longer to surpass.