[spoilers]I think this book, for some reason, was very tragic, and the ending feels really dark - but what happened?
I get the feeling that the main characters had given up everything and gone crazy, and then what?
Did the universe itself end?
I remember that Arthur "realized that this was finally the very end", but could someone please explain this?[/spoilers]

[rubah][edit- lol added spoilers tag, ~rubah][/rubah]