Humans = parasites. Knowing there are usable resources on Mars is giving us a possible future solution when we use up all of Earth's natural resources. Chances are if Mars was once inhabited by something, there is oil up there, since we all know that oil comes from dead plants and organisms after millions and millions of years of decomposing.
That bad ass tank of gas you had at the track one day? Yea, that was probably from a t-rex or something. Just imagine how bad ass you'd go if you had
this guy as your gas!