Ultimately, if the world is going to end then you'll be dead so you won't know about it anyway.
But in the meantime:
There are genuine natural disasters happening to people right now, and some will lose their lives, some have lost family and friends, some have lost their homes and their livelyhoods, and their lives have been altered for ever.
So to panic about something that has no proven basis other than the ramblings of some nutters on the internet is just a bit pathetic really.