One reason aliens might be interested
in earth, though, is us—if life isn't plentiful throughout the
universe, humanity could be a unique and defining aspect of planet
earth. What would aliens want us for? Though the TV series “V”
suggests humans would be a food source for the aliens, this is
unlikely, considering how easy it is to grow food or breed animals.
Humans as slaves to their alien conquerors is another popular science
fiction theme, but if aliens are technologically advanced enough to
travel to our planet, they are capable of designing and
mass-producing robots to serve them. The answer to the question seems
as simple as it is for us—curiosity. We humans have devoted
millions of dollars to SETI and NASA to explore the universe to find
out if there are other intelligent lifeforms out there. As soon as we
could enter space, we sent Voyager with a message to anyone that
would listen, bearing a message about us. We're social creatures, and
we'd like to meet aliens, if they're out there. Some seek to find
intelligent life to explain their own origins, suggesting that aliens
might have “seeded” earth, though if that were true, it just
removes the same question one step—who created the aliens, then? In
the end, though, it seems that if aliens are out there, the most
likely reason they would contact us is the same reason we're looking
for them. It's a little lonely thinking that we might be the only
intelligent life in the entire universe!
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