1.
Culture gives us each a sense that life has meaning and that we have value - by offering us assurances of immortality. Either literally, through the heavens, the soul's afterlives or reincarnation, or by the prospect that some vestige of ourselves will persist over time - from having kids, amassing great fortunes or producing great works of art or science. Yet no culturally constructed symbolic belief system is ever powerful enough to completely eradicate the anxiety that is engendered by the awareness of death.
Sheldon Solomon
3.
If we were immortal, then life would be meaningless, because nothing would be of consequence. Certainly one way of taking the edge off the prospect of our inevitable demise is to ponder how much more horrendous it would be if we persisted in perpetuity. And yet, if you told me I had X number of days left to live, I would lobby for X plus one.
Sheldon Solomon