Should we be worried about artificial intelligence?

I find these questions very interesting. During some recent study, I wrote a response to a different question'Will having robots around make people more or less lonely? I postulated that we will be lonelier when Robots offer an alternative to Human friendships. Suitable human companions will not be available, to those who seek them, because those potential companions all have chosen robotic friends. We have to factor in our human nature into all AI related questions.