To take that further, most ancient myths from most cultures, have some kind of immortals in them.

And the same argument applies to true magicians btw.

When you could summon real magic, why should you reveal that to others?

(or care to claim a million dollar

https://en.m.wikipedia.org/wiki/One_Million_Dollar_Paranorma...

)

But I doubt it.

From a perspective of evolution, aging and dying and new borns, make sense, because the environment changes. And youth is able to adopt better to new changes.