http://www.ufomystic.com/the-redfern-files/why-i-hate-the-aliens/

Nick Redfern hates aliens and he wants you to know why. He hates them because if they are visiting,they haven't done crap to aid in our evolution.
Hmmm...as a student of Archaeology I have a completely 'different' take on that...but I will save it for another time.
Firstly, he speaks of the DOLPHIN BRIGADE; those who believe that aliens are cute and cuddly and here to help. I have never been the sort to beleive that hogwash, but upon further examination, Redfern suggest a great deception is inherent in the alien agenda.
But of course!!!
According to Redfern if aliens are good, why havent they helped us with Global warming? Do we even know what global warming is? Is it really driven by human arrogance, or is it the planet's own cycle? If it is the latter, what intelligent/evil species would get in the way of nature? IF it is the former, perhaps they have more of a hand in it than we think. Maybe they WANT is to destroy the planet, thereby destroying ourselves and thus eliminating a headache without any effort at all. Hmmm...
Then there are the Rain Forests...for beings who may live either in the ether, among the stars or beneath our feet, I doubt very much whether saving trees are on their list of to-do's. Hmmm...
Artery Clogging meals are more of a sinister undercurrent of our current economy. Aliens eat humans...no matter what humans eat. Kidding. But all in all, if they are sinister, if they hate us and if they want us to disappear...watching us eat ourselves to death is something they aren't going to interfere with. Hmmm...
Repeat after me, "Aliens are bad!"
So, Nick Redfern makes a good point, however, there may be a benevolent species of ET out there. There have been reports catering to that theory. Just as humans are divided between good and bad, so may out star-faring...or cave-dwelling neighbors.
We could get all scifi about it and postulate that perhaps an evil faction has been devouring souls from galaxy to galaxy, but a small number of rebel ET's has been following behind, trying to eliminate the threat.
But if we think they are all evil and the day comes when we aim our weapons at the skies and strike our hypothetical enemies to the ground, we may find ourselves looking at the remains of our only allies in all the universe.
Hmmm...