I do not apply to this poll, apperentally. I am a girl interested in girls, and therefore there is only lol-replys to the poll.

Also, "fuck-bot" is probably the most crude way you could have phrased this. "Pleasure Droid," comes to mind as being a much more pleasing way to stir up meaningful conversation here. As it is, you're going for pure shock value. Inappropriate shock value.
To answer your question; there are already "Pleasure Droids" that feel no emotions. They run on AA's and range anywhere from $10 to $200. There are more extravagant models, sure. They are also no replacement for a meaningful relationship, no matter how you doll it up.