Well, this kind of depends on what kind of an alien I am, doesn’t it? I mean, if I’m the kind of an alien overlord that’s planning to demolish a planet for a superhighway, I don’t quite have grounds for snooty moral superiorism. In fact, considering that the galactic superhighway probably could quite as easily take a little dip around the planet, I’d have to be a complete asshole to the degree that there’s nothing that would convince me that I couldn’t get by raiding the planet before destroying it or enslaving a small pet horde of humans.
No.
“pity this busy monster manunkind”
e. e. cummingsI told you indomitable WILL!! Don’t make me tell you again. We’d just kick some alien butt and temporarily have a little peace between countries. Hmm…I don’t think enough women answered this question. 
Well, to answer the OP and BMallion, sewers. The aliens could simply use earth as a base to dump waste into our sun. If they had some sort of teleportation technology, they could simply sap their own wast into our sewers and we’d never notice.
Also, I’d like to note that penises and breasts (along with the other bits attached to breasts) are really good for making more people to fill up the sewers.
Sense of humor is quite important. Especially toilet humor. Just say the word “fart” right now wherever you are in a normal voice. You will almost certainly get a laugh.
When Q puts me on trial for the crimes of mankind, I will enter a Rice Krispy treat into evidence.
So cutting bits off your child’s penis is the norm? 
So long as your kid cleans his nether regions regularly, what reason is there to circumcise?
[/hijack]
I’ve always felt the greatest thing about humanity was the ability to be kind. Compassion is the most important thing in the world I would think.
We did come up with apples, sweet corn, etc. through several thousand years of breeding. Good work, Homo!
Our greatest strength can also be our greatest weakness. IMHO, our most redeeming feature is…
…the belief that things can be better than they are, and the drive to make it so.
I wasn’t refering to the words or the way they could be used for propaganda, but to the actual feelings.
Well, one could certainly feel compasion for the homicide bombers. Especially if the argument that they are martyrs is accepted. I think the point is that feelings as such are morally neutral. They can be directed towards good or evil
Consider that very few people feel compasion for sewer designers, builders, or cleaners. This dispite the obvious value of their work.
About five minutes ago, we landed a robot on the surface of another planet. It will soon be roaming around that planet, making measurements and taking high resolution images.
The signal from this robot was relayed by another satellite we are flying in orbit around that planet.
Elsewhere, a telescope orbiting our planet is peering into the depths of the universe, being remotely controlled from the ground.
In the meantime, several humans are living in artificial environment we have created outside our atmosphere.
In a few months, a spacecraft powered by the energy of atoms themselves will enter orbit around Saturn and plunge another robotic spacecraft onto the surface of a moon orbiting another planet.
This is mankind’s greatest redeeming feature. Our ability to push our horizons and expand our understanding of the universe.
Amen, Sam Stone.
Aesthetics. 
And conformity. What 12 year old boy wants his penis to look different than all the other boys?