You look and you listen and feel and love till your God-given brain tells you in sorrow there is no God, and it tells you there is no second chance, and no time to lose.
And now you can take up your lifelong task of finding, shaping, deserving a purpose, but it is a long slow backsliding task, and stable structures cunningly constructed are tested to destruction, and there is distraction, deception, despair.
When time runs out and only dimming memories remain, manipulation, excuses, you may be able to summon the strength to die.
Or you may embrace the exhaustion that makes death more desirable than life.
Doubt not those with faith and no faith alike will find nothing.
You will behave as do your friends with faith, who also have no second chance.