Looks like God/Mother Earth thumbed the nose at Mr Camping.
One small Icelandic volcanic eruption does not the end of the world make (unless it's in your back yard
Remember the saying "Time and tide wait for no man"?
I would say the end of the world will come eventually in about 5 billion years but at no man's bidding. Unless some meglomanic has his finger on Oppenheimer's deadly child and can't wait to control what's going to be left (not much).
Have a second helping of egg, Mr Camping. Savor it well.
Otherwise, in a more sensible vein...if you want to read a doomsday book, read "On The Beach" by Nevil Shute.