Since I recently played Thrunna (you can look her up if you want).

Orcs aren't open season for "lolpk". What they are is an extremely dangerous class with low pk survivability and high deathfulness. What I mean by that is, in experienced hands, an orc will totally slaughter a wide variety of classes for a significant number of levels (up to about 40). On the other hand, they can also get destroyed equally fast by a similar number of classes.

Orcs are evil, chaotic, stupid and generally bloodthirsty, so stopping to try and chat with one might result in your getting bashed to death and having your getting of "Hiya orcie" go through right about the time you appear at your pit as a ghost. One way to get around this is to strike first, the other is running away.

One issue with the orc community is that there are very rarely enough orcs to provide you with support. Other race/class/cabals will provide this support structure.

Orcs do form alliances, but you have to have something to offer the other side. For instance, Thrunna made personal/clan alliances with Nexus, Empire, and Scion (or some individuals in Scion). She also mostly tried to stay on the right side of Tribunal. This went a long long way to limit the number of people actively hunting her. As a brand new orc, you aren't going to have any of these advantages (unless you have a chief working for your benefit) and people aren't going to ally with someone who brings nothing to the table. Basically, if you are getting killed left and right, there is no reason for anyone to stop killing you since you aren't strong enough to make it dangerous for them. That is a reality of orc life.

The Chief position is usually (in my experience) held by an active an engaged RPer, but most orcs (even those played by experienced characters) don't last to level 35, so Chief's aren't going to invest a ton of time in helping a character that is more than likely going to be gone in a week.

As for Orcs being a repository of throwaway characters, I'd have to agree to an extent, but only because the kind of chaotic stupid characters that end up being orcs are less noticable in other race/class builds, and they don't make it into a cabal very often, where as with orcs, you get subjected to their clan channel stupidity right from level 1.

Where you seem to be making a bad assumption is that in CF, people are killing orcs because they hate orcs, and any orc is the same as any other. This isn't true. Yes, a maran could go an slaughter NPC orcs, but these are the peons and peasants of the population. Adventurers (i.e. PCs) are the movers and shakers. These are the people where killing can make a real difference for your cause. If that cause involves the eradication of orcs.... guess what, they are coming for you.