A reason to go to Mars

A reason to go to Mars:

http://www.google.com/hostednews/afp/article/ALeqM5hBHeQGq6_cMZ8o3uM5zsWeIWv14A

In space settlers group people have created a vision of large colonies
orbiting the SUN, housing hundreds of billions of people. My own feeling is,
we should use the resources of the solar system as a launch pad to move to
other stars.

Selvaraj