It is haiku. Haiku doesn't have to be 5-7-5.
I can only say, mea culpa! Too much time songwriting lately :-)
There is no Extraterrestrial life
There aren't any suitably capable Extraterrestrials
Interstellar travel is too difficult
We're too uncool / not worth the trouble
What do you mean they haven't visited?
Results (533 votes). Check out past polls.