Zombies and Vampires are a major infestation in television and even movies. How should we explain the popularity of this sort of ancient pagan mythology in a supposedly scientific age? Aside from being cheap to film, these tribal dramas must tap into our primal psychology somehow.
The zombie and the vampire are typically contagious and evil. A suggestion that caught my eye is that the zombies metaphorically represent the poor and the vampires the rich. Each threaten, prey upon, and lust after the human - representing perhaps the middle class. In an age when middle class membership is increasingly fragile, with status heavily dependent upon circumstances seemingly beyond individual control, with poverty an illness or layoff (zombie bite) away, many may crave the vampire bite (lottery ticket?) that offers a way out.