Someone with a weak heart is just as likely to die from being jostled to, hitting the chest right and heard enough can throw even a healthy person into cardiac arrest. Striking the head can cause a person to feel fine for about an hour then suddenly drop dead with no signs of injury. As I said, anything can kill you, if used correctly.
What I want to know from you is if electrocution is fatal or not? Until you can settle the score on your knowledge of fatal electrical incidents I have to disregard anything you have to add here.
So, is electrocution fatal or not? You claim to have been electrocuted many times and seem to be no worse for it. This is EXTREMELY vitale to the value of anything you have to say here. I don't think you know a damned thing about what is fatal regarding electric shock.
Electrocution CAN be fatal. The fact that you keep using it as a buzzword (no pun intended) doesn't mean anything. Also, ANY electrical current carries the possibility of intefering with the heart's pacemaker and triggering heart failure. In fact, that's exactly what a defibrillating machine is DESIGNED to do. It stops the heart's pacemaker when it's malfunctioning, so that it will hopefully reset itself and go back to working properly.
At a guess, I'd say people dying from tazers, which SHOULD be a non-lethal voltage, are a fluke caused by bad interaction with the pacemaker. It happens, much the same as a handful of people have bad reactions to general anesthesia during surgery and die on the operating table. It doesn't mean that the anesthesia is being recklessly or improperly used, or that it's dangerous in general and should be discontinued. Shit just happens.