Garth had grown up fascinated by vampires, from the slayer through to Lestat and the very count himself. Garth just could never get enough of them. He drank it in with a thirst that was unrivalled, through his teen and young adult years. As he aged his passion never died.
Sadly however, Garth did, and now his thirst had changed, and as he drained the last of his relatives and left their bodies piled in the living room he realized that now, he, much like his passion would never die.