No matter how this book ended, there would be those who did not like the ending. If the End implied the end of all, that meant everyone died and there was nothing left to tell but the End, because everything truly did end. However, if the children were saved from the island, reunited with their parents who did not really die, and they rode off into the sunset, fans would not be satisfied.
The ending would be cliché and unbefitting of the end of A Series of Unfortunate Events. The books would be false, as the series of unfortunate events actually was a series of events leading up to a happily ever after.
The End of the Review of the The End
In the end, The End is a great book, and perhaps the most poetic of all the Snicket books (written by Daniel Handler). When reading this book, you will enjoy it only if you truly get the meaning behind the words. Do not read this book as you would any other book in this series.
The End is the beginning of a new adventure for the Baudelaires. Treat it as such and you will enjoy the ride. Sure, it would be nice to know the answers to all of the questions Lemony Snicket laid out throughout the series. It would also be nice to know all of the mysteries of the Earth. These questions may go unanswered forever, and if you can accept that then you have accepted The End, not as the end, but as the beginning of The End and the end of the beginning.