I remember back in 1999 when the big Y2K scare was going on. Supposedly, nothing would work, everything would shut down and it was supposed to be major chaos. I worked at a financial institution then, and I remember the panic among the higher ups that we were headed for BIG issues come midnight on December 31, 1999.
That day came and went.. and for all our preparation, nothing happened.
I'm not going to worry about the end of the world. I'm sure it will happen eventually, but to sit around and worry about it or stress out about it - seems pointless. If the earth implodes, the sun explodes and takes us with it... there is nothing we can do. Whatever happens, happens.