Mankind wrongly assumes that they were born and will die, but assuming doesn’t make it so. They extrapolate that awareness as well begins and ends with the accident of birth and death. Extrapolating doesn’t make it more so!
Can you experience unawareness? Then you can’t prove life began in the womb and dies in the grave: it doesn’t. To say it as briefly as mortal language affords: The Source of consciousness doesn’t need a body to exist. Your source exists whether your body does or not: you are deathless.