Dave, depends on how hilly you mean by hilly! Unless you're living up a mountain, you can generally find a nice 5km to cycle.

Raggytash, the number of cyclists killed and injured (by careless drivers) is very low in comparison to the numbers cycling.

With climate change, the day of the private car carrying around one sluggish person is over. When we build proper infrastructure for cycling, as northern European cities like Odense and Oslo are increasingly doing, the number of injuries and deaths will drop to nothing other than the occasional freak my-hamster-ate-me accidents.

Cycling is already far safer than driving. The main danger to cyclists sharing road space with drivers is
distracted driving.