Things like Skynet will never ever going to happen. Life vs Machine is always like that and wont ever be a situation machine overpowers humans.
Of course it will not. For one thing, it is extremely difficult, and even beyond our very understanding (we understand as much about the human conscience as we do about topics like dark matter, i.e. we understand almost nothing), and what, we are going to try to replicate it? Utterly impossible.
It can get close. But machines will never be fully self-aware, I'm afraid. The fact that they are programmed means that at least a part of them is dependent on humanity - thus they could never "overpower" us.
Humans using machines to overpower other humans, however, is an entirely different scenario. And it has already happened, in so many ways. And it will keep happening in even more ways.
The "Skynet" thing in this thread is just a joke.