I think the people will partially destroy the Earth themselves because they think the World will end on the day anyway so people who believe in it might just kill a bunch of people, steal things and all that crap
I think its too soon for the World to end naturally
As long as i'm having pleasurable sex with my girlfriend at the time that the world ends I won't really mind. All I can do is hope that there is a heaven where I can live and have sex again.