Hinduism, I think. Though I guess karma is a concept that spans multiple religions.

Agreed. Most western cultures will pump the fluids out of their dead and replace it with chemicals that keep them from decomposing. Which is also gross and creepy.

Maybe there’s no good way to dispose of a body.

Ritual “cannibalism” is still in practice today. Some South American tribes will burn their revered dead and mix the ashes with the communal food, so the dead member would continue to live and empower the tribe.

How quaint.

Most science puts the age of elders in nomadic prehistoric groups between 60 and 70. Infant mortality was a problem, but once the child was over puberty, they tended to live longer than their early farmer counterparts.