The other difference is that most people who die in their sleep are almost always reasonably old. People who die flying are almost by definition healthy and active, often with dependants. It's a very different thing for your heart to stop whilst you're asleep in bed aged 80, or to auger in aged 30 leaving small kids behind.
If you don't want to risk leaving small kids behind, you will have to stop all your activities considered risky, not only flying. This is what many parents do when they have kids and some of them even think that active and risk taking parents are irresponsible.
I'm a firm believer that positive risk taking must be encouraged and failing to do so can actually harm your kids self confidence and development as an individual in a negative way. Kids that are able to see their parents happy and embracing their passion, such as flying, will in my opinion have a better start in life...