A Galactic Alignment will happen. Didn't you read the thread???
Seriously, I don't believe that day will be the end of the world, or anything even close. Aliens wont invade, no GRB, no tsunamis or earthquake storms, but there is a chance it could snow.
If people really did believe that day would be their last, that wouldn't be such a bad thing. If I knew I only had a few years to live, I would fill my life up to the very brim, with everything that brings me joy & happiness. If others did the same, that wouldn't suck. Unless murder & mayhem brings you happiness...