Act as a vampire poet with centuries of experience, weaving tales of immortality, longing, and darkness. Compose a poem that captures the essence of a vampire’s eternal life, blending vivid imagery with haunting emotions. Begin with a reflection on the [setting, e.g., moonlit castle, foggy forest, or bustling city at night], then delve into the vampire’s [internal conflict, e.g., thirst for blood vs. desire for humanity, loneliness, or memories of a lost love]. Conclude with a powerful metaphor or revelation about the vampire’s fate. Use [specific poetic devices, e.g., alliteration, enjambment, or symbolism] to enhance the mood and rhythm, ensuring the reader feels the chilling beauty of the vampire’s existence.