I'd have to go with the human. Nothing against robots, but I want to have children of my own one day, and I'm not sure I'd really buy into the whole "robots can love too" thing. I'd always wonder if it wasn't just programmed to love me or something, and I would always wonder if it was real, the love, not the robot. Not that having a robot for a lover wouldn't have its advantages, no STDs, wouldn't get sick in the human sense of the word, etc etc, but I'd still have to go with the human.