Oh, yes. I love apocalypses, but I could only watch 28 Days Later with some pretty serious use of the fastforward button, because the suspense plus the gore/violence was too much for me.

I've discovered that while I enjoy thrillers (Die Hard and so forth), I don't like suspense films, and horror movies tend to be suspense films rather than thrillers. The tension gets me all wound up, and then so often it's not released in a good way, but in a terrifying way. Makes me unhappy.

It took me years to realize that I could enjoy Terminator because it was a thriller rather than a horror flick.