Why do vampires have to be invited into your home?

Literally, it's like saying: I invite my own death to my home. How was Rebekah able to enter the Salvatore home - Trueblood. Entry to homes: Vampires cannot enter private human homes unless they are invited in by the owner of the house. Vampires do not need to be invited into public places (such as bars or restaurants). read more

A person's home is his sanctuary and automatically gives him some protection against outside demonic influences, which is why the vampire cannot enter without an invitation. Once invited once, however, the gateway has been opened and the vampire is free to come and go as he pleases. read more