It does happen, just ask Gray Buffalo...lol That said, it's never much fun when it does.
It can hurt physically and mentally... I'm glad to know that you'll survive without any long lasting harmful effects.
When you decide its time to build another I would suggest trying a different bow wood.. say Osage. But if you make another of hickory keep it long for your draw length or make it really wide. Then make sure you don't take the moisture level down too far. Hickory and other white woods can be over dried.
Again I'm sorry for the loss of your bow and I thank God you're going to be ok.
God bless,Mudd