Your ego has blinded you. Your imagination has limited you. You believe that you are the only intelligent life form in the universe. And to that point, you are correct. Your mistake is believing there is only one universe.
We have been sent by the god of the 43rd universe. She is not a benevolent being. Most gods are not. But our god is, how shall I say this?..."special."
She has sent us here for this purpose and this purpose only. To bring you Chaos. To bring you Pandemonium. To bring you Hell.
And lastly, to bring you Eternity.
Have a nice day.