I'm sorry this happened to you. I believe that everything, every little thing, happens for a reason. We may not always know what that reason may be...

Three days ago I rode my bike (alone) up a small hill 2m high but I didn't know the opposite face was a cliff and fell straight down. I had a limp but it only lasted for some minutes while I recovered. The real pain and bruising is on my wrist, since I had enough time to try and catch myself, but from such a height.
The scary part is that the whole incident could have been 1000 times worse... yours as well.
We need to be more careful but sometimes we can only do so much