This all sounds like a healthy respect for the hazards, if a little graphic. Fear is a survival mechanism and it would be worrying if you had none. Keep it in perspective though. How far away are the 45litres of unleaded in your car, and how close to hundreds of 1 ton metal boxes do you fly head on with to within 3 feet in a light aircraft? You are much more likely to come a cropper driving to the airfield!
Reduce risks & fly safe