I'd much rather know how the world ends, than to know the actual date of the ending. Death has been a subject I've pondered about for a really long time during my personal psychological and philosophical studies, and it's not something that genuinely inculcates fear in me anymore.
Also, speaking of 'the ending of the world' -- just because human life would cease to be, doesn't necessarily imply that the world would be coming to an end. In any case, the more appropriate term should be 'the ending of the world as we know it'. After humans would be gone from the face of the planet (assuming this end would wipe out literally every human), there would still be creatures walking the earth, going about their merry lives. Wind would still blow and rain would still fall from the sky.
In this scenario, I'm not taking into consideration any external factor to the end of the world as we know it, i.e sun imploding, which would genuinely mean the term 'end of the world', seeing as everything would cease to be.
Interesting and thought provoking topic, congrats OP!