Are we alone?

[The chaser]

Of course we aren't alone, I remain a quote from Neil "DeGrasse?" (I don't remember the name):

"Saying that life doesn't exist anywhere but Earth is like taking a glass of ocean water and saying there aren't any whales."

The universe is HUGE. And when I say HUGE, I mean HUGE. If we exist, why wouldn't other species do so too?
I don't think there are aliens in earth, though. If they were smart, they wouldn't come...