The same reason some humans don't have souls.
I guess you have to ask the question; what is a soul?
Is a soul the spirit in us that makes us who we are?
Is a soul the energy that makes us alive?
Is the soul the thing that makes morality in people?
Or is it a combination of the above?
Many people would say that aliens don't have souls because they seem to not have a connection/fear/or understanding of death, that they kill and
dissect humans indiscriminately with no compassion. Is this because they don't have a soul, or is it because the see humans the same way that we see
Others say that they seem to never show emotion; but an advanced species may have evolved into purely logical beings and since emotion clouds logic,
they would've learned and/or adapted to be immune to the disadvantages of "emotion".
However; if its true that the "soul" is just a reflection of the energy thats a person (which is what I believe), then it can be said that aliens do
indeed have souls, and that everything has a soul, rocks, trees, animals, etc. Everything seems to be affected by emotion, even things that don't
necessarily show emotion. (even plants and rocks can be affected by positive and negative energy)
So I guess, Yeah... aliens have souls. Doesn't mean they have the same belief about souls, morals, and/or god that most people do.
S&F for posing an interesting question.
edit on 5-5-2011 by Mactire because: (no reason given)