It's okay, Gunthr.  There is certainly something disconcerting about the dead who don't die.  Unseemly.  Inconsiderate.  
My childhood was terrorized by the undead variant known as The Mummy's Ghost.  Cotton-pickin heap of rags chased me everywhere.  Fortunately he and zombie buddies like him were slow, and nothing is faster than a scared kid.  
(Scary movie rule No. 1:  Never make monsters faster than the audiences or they will eat the audiences and box office receipts will plummet.)  
Other monsters added to my torment.  Until one night when a giant ape stared in my window and I said to myself (my first epiphany), THIS IS JUST A DREAM!  I punched the ape in the face, and he went away.  So did his creepy associates. 
And then I read threads like this, and realize -- the zombies are still chasing somebody somewhere.  You are now advised as the pilgrims were when they confronted the rabbit in Monty Python: Run Away! Run Away!
But first punch them in the face.