Be the beast, lest you will become the beast.
Be wary of how long you stare into the abyss, for the abyss stares back.
You should really seek out some Nietszche for your "how to cope with myself as inherently evil" needs.
We consume, at base, as it's what animals do to live. We must kill to live. By extrapolation and after thousands of years, we rape the environment to feed our bursting population. We must stay warm, at base. Extrapolation: the Sears Tower. I think much of society can be explained by looking at our base animal needs and imagining their extrapolation ad nauseum over millenia. This very paradox at the center of our being is no greater or more mystical than all the other paradoxes that drive the universe, I believe.
You answered your "is there hope" question in your statement that we are imperfect and evolving.