I had a really bad time after an off at 50mph about ten years ago, which made me get a car license at the time...worst thing I ever did, even when I started back on the bikes last year, I was shaky on them for the first few weeks, but the feeling past and now back as confident a rider as ever, but all the more aware and cautious because of my accident. Even though it was not my fault (someone pulled out a junction on me) I think its made me a better rider for it.
Although your smarting now, maybe its better to get back on the horse as soon as you are fit enough and build the confidence back up again? It would be an awful shame to give up something you enjoy because of a silly accident that wasn't your fault.