Since you will be long dead before the world ends you won’t get the chance to think any of that.
Every generation since the beginning of time has had people expect the world to end during their lifetimes and 100% have been wrong.
You will be wrong too.
Lets make a bet. I will give you $1,000,000 should the world end before you die. You leave all your possessions to me in your will if the world has not ended when you die.
Seems fair to me. Put your $$$ where your mouth is.