It is important to take into account that teleportation and teletransportation is not the same. Teleporation is based on the idea of send a kind of information to another point of the Universe at the speed of light. That information is the wave function of the system, that contains all its information. Meanwhile, teletransportation means to transport a system, not its wave function.
What's the advantatge? Easy, information can go to the speed of light meanwhile matter cannot go (theory of special relativity). Despite the fact that discover the wave function is very difficult there have already been successfully experiments. Teleportation is a fact, teletransportation is only a Star Trek fantasy.