in a World where there is no right or wrong...

[Grumm]

How will that apocalypse be ? Like we all die at once ? or will it take years and we end up like in a walking dead situation with no law and stuff ?

 

[Steve R.]

How will that apocalypse be ? Like we all die at once ? or will it take years and we end up like in a walking dead situation with no law and stuff ?

The number of potential scenarios is boundless. Only limited by one's imagination. Potential scenarios: an asteroid strike, a virus, the Sun going nova, even another species of animal supplanting humans. I have even read a story where the Earth was dying of "old" age.