Tough questions. Maybe if the AI thing takes off and machines can learn and even feel, humanity will have to deal with issues even more complex that the ones we are facing today, about morality, about human nature, about rights. Will there be AI rights activists in the future? I don't know and don't want to find out, tbh.
But yeah I don't think humans will be able to replicate a human mind using entirely different components than what the human mind uses. If something is just a product of written code, it's not alive imo.
The moral dilemmas of the future will be related to genetics stuff imo. Cloning, human improvement, human/machine hybrids, that stuff. Creating and modifying biological intelligence and bodies is more likely. A "natural intelligence/human brain" in a machine body is way more likely than an AI in a human or machine body. Speaking of good movies, have you seen Gattaca? It's one of my all time favorites :D Fucking awesome, and it really gets you thinking about a lot of things.