My earliest memories of horror are 'Friday the 13th Part 2,' John Carpenter's 'The Thing,' 'Halloween,' 'An American Werewolf in London,' and 'A Nightmare On Elm Street'... and 'Hatchet' is so obviously inspired by those films that I may as well have made it in 1984.
I grew up in a family that despised displays of strong emotion, rage in particular. We stewed. We sulked. When arguments did occur, they were full-scale conniptions, and we regarded them as family failings. Afterward, we withdrew from one another and tried our best to strike the event from our memories.
Zombies have no memories of their former life. You wont see the undead trying to wash windows or do your taxes. All they know how to do is swarm and feed.
Personally, I believe people who have a lots of memories are people who are living with zest.