I have mixed feelings about Isaac Asimov's three laws. It seems to me too much like created a subservient race of beings which, historically, has always led to resentment and conflict. As well, I, Robot has an interesting example of how those three laws could conceivably be twisted to justify precisely the type of violence it's intended to prevent.

I think people are too apt to think of robots as a threat to be controlled rather than a new life form to be communed with as equals. That's just my take. Though, using them as autonomous killing machines is definitely a cause for concern....

As for writing science fiction. Interesting idea. I've never considered it. That could be fun.