Ellobuddha said..Hang onto your gear for flat water. Windsurfing fast is a lot more fun that kiting in my opinion.
Kiting in the waves is excellent on a surfboard.
kiting is heaps easier than windsurfing, thats why so many more people do it.

I'd flip that statement around. Windsurfing on flat water became boring to me, the ability to boost on flat water is great, and kites now hold the speed record. Admittedly, once the wind gets up and the water state choppy, windsurfers are genrally faster, but kiting is still more fun.
In the surf, I still prefer to windsurf. the ability to oversheet the sail, and just ride the board on the wave is a feeling I've yet to replicate on a kite, you still spend too much time "surfing the kite", not the wave in my opinion.
Either way, it takes up way less space. They are very different activities and I still like to do both.
As for accidents, they occur in both sports, but kiting has had a few more fatalities. GET LESSONS and make sure you are always aware of your sorroundings/conditions and you should be fine.
Give it a go, there's nothing to loose!