I can see the idea of robots and humans, but separate. (most) Everyone (in tech-savvy places) finds having a computer, cell phone—and usually some sort of mp3 player—normal technology; so I can see how robots will become another technology. A little electronic buddy following us around everywhere. (Hey, that might actually be a little fun!)
Whether or not the robots we create question what life is, I don’t know. I guess it depends on how we make them. And I’m still struggling with defining consciousness for myself, so I don’t know whether or not I’d consider robots conscious.
One thing I don’t believe is that downloading our thoughts into machines will make us immortal. Our thoughts, yes, but not us. I think we’d still be in our bodies (why? how? I don’t know, I just don’t think data transfer would send consciousness as well, whatever it is). So the idea that people are excited and looking forward to and planning this artificial sort of immortality scares me a bit. I guess in short—yes, I’m nervous about the theory.
As to everyone saying they’re not worried because it’s not possible… like what @Cruiser said, in just 30 years impossible became possible with computers, the large bulky monstrosities became desk-sized, and about 30 years after that we’ve got cellphone-computers we stick in our pockets and take with us everywhere.
Before that it was things like planes flying: previously considered impossible. And now we look back at past humans and think ‘wow, were they silly, of course it’s possible.’
I guess I just don’t buy the “it’s not possible, period” concept. Maybe not today, tomorrow, but humans seem to have a very ingenuitive side to them.
I’m not saying I’m not a little skeptical, I am, about a lot of things. But the thing I’m most skeptical about is absolutes one way or another. (I don’t buy into a lot of things, but I don’t buy into not considering them, either.)
And I’m not saying it will be possible in the exact way we imagine it—rarely things are, are they? But if people have a goal in mind and want to get to that goal, they will find a way to at least somewhat get there.
Just personally, though, I think the idea of putting human consciousness into a machine or database is a rather bad goal to reach for.