If you think like that, you have forgotten to take God into account. Our real hope that death is not the end depends on our belief in the trustworthiness of God. We shall not be cast aside like broken pots on some cosmic rubbish heap. Human beings are not naturally immortal, but the faithful God will give us a destiny beyond our deaths. It makes perfect sense to believe that God will remember the pattern that is you, or the pattern that is me, and recreate those patterns in the world to come.
Christians call it resurrection .
The true Christian hope has not been survival, but death followed by resurrection. Such a hope is as credible in the third millennium as it has been in the preceding 2,000 years.