The paranoia fuel of it all. If you were a jerk or just made someone upset and they died, there's a decent chance they can put a hit on you.
Pilot
Yes, he kind of deserved it, but Eddie's ultimate fate has to be unnerving for a few people of being shot and dismember and the bag given to the grieving mother.
Speaking of which, the human world is apparently just as bad as hell itself. The grieving mother is given the tagline 'MOM SUCKS AT DRAWING OWN KID'. That just gives greatimplicationsfor Charlie's goal.