I believe in NASA & Science, and I believe the world will not end this friday. But I surely agree that mankind is turning against itself.
Plus, world ends or not -- Live for today! Enjoy your life. And even if you missed out on a chance to do something...ki fark painda hain? You had a life, and you experienced it! Be it your way or not. And you don't know what happens after the world ends. So just chill! =D