Artificial Intelligence

In recent conference at International level
Businessman Elon Musk , computer specialist and former CIA employee Edward Snowden and Scientist Stephen Hawking
warned us about how A.I's can destroy humanity.
You all have seen these movies Terminator Genesys
Avengers -Age of Ultron.
What do you think ?
Are A.I's boon or bane?

Robots And AI's of course can destroy if used for that purpose

Humans are enough to destroy humans