Although we disagree on what stage of human life should be protected, I must draw the line and prohibit humans of any form in test tubes. Science will inevitably lead itself from microscopic humans in test tubes to recognizable humans in vats. While mothers have strong emotional bonds to their children and are capable of empathy, science is amoral and must be kept on a short legal leash.
False. Molecular circuits can be built. As I have seen in electronics, the geometry is getting so small, we are soon going to build things on a molecular level. DNA can be constructed mechanically. Why clone something that is going to age at an accelerated rate and die, when you can build the DNA from scratch? Robo-sapiens?
Of course, what you seem to be unwilling to admit is that a societal practice of abortion has blown the doors down to openly practice eugenics.