It surely has been pondered before, but I must bring it up again:

Consciousness is the presence of the ability to experience life (senses, emotions, perceptions, thoughts, etc.). Death is the absence of consciousness (inability to experience those senses). Going by this simple logic it would seem that all conscious things are fated to be immortal.

If one cannot experience death, then how does one die? The body may die, consciousness itself may end… but a conscious being cannot experience the absence of consciousness, therefore making this being immortal.

To further develop this idea: Think about what it is that you are. You are not your body you are whatever it is (the mind, the soul, the ether) that experiences the experiences of the body. You are the awareness of self, you think therefore you are. You can’t experience “non-experience”, hence why you have no recollection of all those billions of years before you were born.

Basically, to put your consciousness on a timeline: you are all the parts where you are alive… if there is reincarnation, alternate dimensions, or whatever… you can only be the living parts. As soon as your body dies, consciousness is cut off… you don’t experience this period, if your consciousness is ever to be reconnected to a body, you would experience this right away. You can’t experience “non-experience”.

Like an unending movie: You close your eyes as you body fades away, and then you open your eyes right after in you next lifetime as if it is only seconds later (but a hundred trillion years could have passed but you can’t experience that).

Just a thought.