That video takes us to another level - a level that starts to seriously question the ethics of humans, ultimately leading to the removal of free will and the slavery of animals.   

I guess it's no worse than slaughtering animals for food, hey! at least they are still alive 

Just because we can do something doesn't mean that we should, a line must be drawn somewhere, maybe our conscience will guide us if we listen to it.

I'll let Jeff talk about ethics. I think this in general could be applied here too. Especially the last line.