Thanks for sharing your experience, I really feel for ya dude. The FZ is also my first bike and I've had a couple of spills on it, one low speed low-side on a wet round about and another one on the local race track at 100kph. I was lucky in that the 1st was covered by insurance and the 2nd only the handle bar was bent and needed replacing (thank god for frame sliders).
Nothing this bad though. As far as getting back on the horse goes, I spose your in a unique experience to learn from this crash, as I have. It's really hard not to freak out about getting back on, and I spose the worse the crash is the harder it will be to get over. I've had to have confidence in myself, enough to keep riding and try and analyse what I did wrong, the events leading up to the 'oh no!' moment.
I can honestly say that I am a better rider than I was before, but it doesn't keep my brain from replaying those events every now and then, especially when I'm riding. It just takes time and opportunity to re-develop confidence again. All my riding buddies leave me for dust in the twisties - it's ok, I really don't mind, I'm riding my own ride now.
Peace.
k.
you have the most random avatar ever haha.