How is physical immortality created?
There are some logical steps to follow:
>Removal of Death is the goal
>Analysing what Death is may be necessary to believe in this
For the spiritually minded, Death may simply be a demon who remove people from this plane of existence when certain criteria are met. At first glance these include the destruction of the human body. But isn't the destruction of the human body itself just a manifestation of the removal of the human soul? With no human nature, how could it look human? The body will then disintegrate.
>The following conclusion is: the soul must be bound to the body to avoid death
This in itself will prevent the destruction of the body, because a human soul while alive, must have a human form. Anything else is against the common universal agreements and no being can go against this. Trying to do so would make that being the target of everyone, making a mistake will be preyed on.
What force is strong enough to bind the soul to the body, even withstanding "death"? It is quite simply; anything that survives death.
So why can humanity survive at all? The force that makes a collective of beings survive, that is what can withstand death, this is the force that must be used to bind the soul to the body.
>Death is simply the loss of everything that makes up the inidividual as a part of this one generation (s)he was born into. The feeling of growing up and aging. The stress of having to survive until retirement. The pressure to live a happy life, finding love while still being young and healthy, and seeing the world.
Losing all of this is the meaning of Death. What remains when this is removed? Can you still imagine life without this?
If so, the possibility of immortality may exist for you.