An excerpt from the article:
"A number of authors have pointed out in their studies of this genre that the thirst for the life-blood of others is a metaphor of lust. It is important to note in this regard that the vampire of legend only sometimes kills his victim; just as often, he infects the victim, turning him or her into a vampire. E. Michael Jones has written that at the root of the phenomenal rise of horror culture is suppressed conscience. Tracing the pattern from Mary Shelley’s novel Frankenstein (first published in 1818) through to Ridley Scott’s film Alien (1979) and its sequels, Jones argues that the denial of moral law produces metaphorical monsters that arise from the subconscious of creative people and spread into society through their cultural works. The monster in the Alien
films, for example, is a ghastly abomination of the feminine, and salvation is possible only through expulsion of the offspring it implants and incubates in humans—a subconscious eruption of internal conflicts (and guilt) over abortion.
As Jones points out:'By following our illicit desires to their logical endpoint in death, we have created a nightmare culture, a horror-movie culture, one in which we are led back again and again to the source of our mysterious fears by forces over which we have no control.'"
I highly recommend the entire article!