Take a few minutes and watch this video:
What do you notice about the vast majority of those accidents? If you said "bikers riding beyond their abilities," give yourself a gold star. Yes, there were a handful of crashes where an automobile was clearly at fault, but the rest were overwhelmingly caused by motorcyclists either riding faster than their skills allowed, not paying attention to traffic/weather/life in general, or just showing off and paying the price.
This is the sort of video that gives the impression that riding a motorcycle is dangerous. Of the crashes in that 13:29 video, only a very small percentage were unavoidable by the bikers involved. You can't help it when a car comes roaring up behind you and hits you out of the blue, no. However, if you stop abruptly in the middle of traffic for no discernible reason, well, while you may be in the right, you're also going to the hospital.
Yes, there were legitimate crashes that were no fault of the bikers. For those few, yes, it was dangerous. Even of those crashes, however, what's the single unifying thing? They're all in big cities with lots of congestion. More vehicles = more chances for interaction = increased risk for anyone, not just motorcyclists. We can all learn something from these types of videos, even if it's just a mental note to stay the hell out of big cities (which is always a good idea).
It's a reminder, too, that the perceived risks need to be evaluated from many different sides - and this holds for far more than just motorcycle riders.
That is all.