An alien species masters interstellar space travel of millions of light years. Avoids collisions with debris, asteroids, the effects of solar radiation, calculates course adjustments for black holes, pulsars, quasars, acceleration and deceleration, manages to hydrate and feed themselves during all this process of coming to our planet, and during the last 100 feet of travel they need to turn on bright lights to see where they are going to find someone's rectum?
It's a story so often repeated I'm really quite confused over alien intelligence?