Death is the most painful experience in a human's life.Nobody dies in a matter of seconds...its gonna take minutes....so just imagine all the physiological processes going inside every human cell is coming to an standstill..thats a real pity situation. From another perspective.. one can imagine the pain when a victim is smothered to death...in natural deaths the level of pain is exactly the same but it is not expressed physically because of other physical debilitations. btw i dont fear of death...:P