I agree almost 100% with MCD. Neutrals are widely seen incorrectly, I believe.
The biggest issue, I feel, that prevents people from correctly seeing neutrals as they "should" is the application of real life morality. And mostly, the addition of religion to our culture. Far too often we label people we disapprove of (In real life) as evil. Bush called Iran the axis of evil. This is most certainly untrue.
You killed someone. Does that make you evil? No. What makes you evil is the reasons you killed someone. You say Al Capone was evil. Why? Selling drugs. Is that evil? No. It's simply illegal. Killing rivals, no that isn't evil it is simply how business is handled in a very different world(the drug world, of course.) It only becomes evil when you begin killing innocent people just to hear them scream.
Watchers are an entirely neutral cabal. They call raids and slaughter entire cities of people. Man, woman, child. Though people assume that the Syndicate cabal is evil? A cabal that is not even required to have a war with the cities. It is not the duty of the Syndicate cabal to slaughter every man, woman, and child within a city. It is simply to kill those who have bounties.
An example? My Syndicate Warrior, Kongol. He was sort of a pirate/viking. He killed people who had bounties because he assumed that no one who was innocent had a bounty. That they had at the least pissed off the wrong people. He wouldn't kill without reason. He didn't really care to hear screams of agony. He didn't like to see suffering, though he seemed cold to it(he refused to show weakness). Sure, he would kill a man for gold. Any man. Though is killing for gold evil? No. It possibly could be, though that is all relative. What is the gold needed for? Family starving? Etc.
Basically what I am getting at is this. In FL, we tend to apply our current world views and impose them on FL. Take a step back and realize this world is not the current world. The world of FL, if compared to anything, should be compared to medieval Europe. Killing and death are common. The VAST MAJORITY of people are neutral in alignment. Very few are either good or evil. Examples of evil are those running around slaughtering people for mere pleasure. Examples of good are those who sacrifice their own lives to protect the innocent for no other reason than they are innocent(Though that would not necessarily make you good, it is the only example I could think of).
I know I ranted, and forgive me if I became repetitive or at times did not make sense. 
EDIT: If animals had an alignment, they would all be neutral. Yet there are times when an animal would seem to have "attacked out of nowhere." Though we know that such is not the case. I like to think of neutrals as just men, neither good nor bad, just men(or women) seeking to live their life.