The Fox sci-fi buddy cop show Almost Human episode on sexbots inspired me to revisit the ethics of sexbots. While the advanced, human-like models of the show are still things of fiction, there is already considerable research and development devoted to creating sexbots. As such, it seems well worth considering the ethical issues involving sexbots real and fictional.
At this time, sexbots are clearly mere objects—while often made to look like humans, they do not have the qualities that would make them even person-like. As such, ethical concerns involving these sexbots would not involve concerns about wrongs done to such objects—presumably they cannot be wronged. One potentially interesting way to approach the matter of sexbots is to make use of Kant’s discussion of ethics and animals.
In his ethical theory Kant makes it quite clear that animals are means rather than ends.