I'm not convinced that cycling is especially dangerous and my experience is that I've inevitably put my hands out when falling, so I think that gloves should be the first part of PPE recommended for cyclists. Luckily, I've never hit my helmet/head when coming off so I've found that a bike helmet is most useful for stopping low branches etc from hitting me. I'd recommend cycling/protective glasses too - very good for protecting against insects hitting your eyes.
I find it interesting that people seem to have a skewed attitude towards head protection and cycling. If head protection is that important, then why are helmets not recommended for car passengers, people showering, changing a lightbulb etc.?