Because most people dont believe aliens exist and it's never been proven that they do.
aliens, Might exist but their are rumours that they probe people.
Maybe, humans might be from Earth.
it was on the alien side might be because it was born in a alien way by the way aliens are actually called xenomorphs
Humans may fear aliens due to the unknown and unfamiliar nature of extraterrestrial beings. The fear of the unknown can trigger feelings of anxiety, especially when considering the advanced technology or capabilities that aliens are often depicted as having in popular culture. Additionally, the idea that aliens may pose a threat to humanity or disrupt our way of life can also contribute to this fear.
It is unexpected yet it might happen or not.
i think there are and they might be your own friends or some thing.
No!who knows......maybe there might be aliens.
it depends on your imagination because some people might believe that aliens exist others don't its all about your own imagination on how you see it
Well that I know of their might be living organisms that exist on mars, but aliens its possible.
As no aliens have ever been seen it is not known what colour they might be.
Reptoid aliens are aliens that are green and slimy. They usually collect samples of sheep blood. People think they use sheep blood as a resource, but no. Some fear that one day, Reptoid aliens might control our planet and turn the human race into slavery.
people believe aliens are responsible for crop circles. some also think aliens created Stonehenge as one of many communications posts. these people are crazy. There are no aliens known to exist, in real life. Sorry. Someone has to be the first form of intelligent life in the universe, and it might well be us.