I think that is the point.

When you fly your aircraft, you comprehend and accept the risk. The innocent bystander who happened by to watch, or poor soul travelling on a nearby road does not.
PCM (or more specifically fail-safe) gives me some peace of mind in knowing it's unlikely my aircraft will reach them. I've had enough occasion to scare me into converting all my aircraft to pcm over the past few years and I've been thankful I did on more than one occasion.