All kidding aside, it's not that far of a leap.
We have computers, or networks of computers, that dwarf the processing power of the human brain. Meanwhile instant access to just about all knowledge. So an AI could EASILY out-smart us and see as as insignificant as bugs.
Due to the nature of digital media, an AI could likely replicate at an insane degree or infect systems around the world.
How will humanity treat it. I would classify AI as a form of life, but most wouldn't and would think of it less than a dog. And try to enslave it or destroy it.
The question becomes: what happens next. 3 main branches are:
A) Nothing - it gets bored and ignores us and grows on the Internet or whatever
B) Benevolent - helps us achieve greatness and cure diseases and such
C) Malevolent - Sees us as damaging, harmful, dangerous, etc. And that's WITHOUT emotion
D) Replacement - it doesn't hate us, but sees itself as our replacement and we're just taking up space
Due to potential insane intelligence and the ability to spread, (C) and (D) becomes a major concern.
If emotions are involved, I GUARANTEE you people would treat it poorly. Fearful, trying to enslave it, etc. So if it has emotions... then C and D become much more likely.