@lumacman

I think your characterization is mostly there. The Orcs today definitely are a lot like the Star Trek Klingons, however, keep in mind basically their entire race was rebooted. They lost their communion with their ancestors and spirits of their home world. I doubt they even remember their history and legends and stories. One moment they were fighting a holy battle against the evil Draenei (Sargeras fooled the Orcs into thinking the Draenei were hateful demonic conspirators working to disconnect the Orcs from their ancestor spirits), then the next thing they knew they emerged from their demonic bloodrage on Azeroth in internment camps. They were essentially drugged over a long period of time, lost their spiritual connections and lost their history (I doubt the blood-crazed Horde brought ancient scrolls from Draenor into battle, and I'm sure any oral histories would be difficult to remember, and many elder Orcs were likely killed), so the Orcs we have in Azeroth really aren't the same people as the Draenor Orcs. They have some similar properties, but they had to completely reinvent themselves and carve out a new home, new culture and new society as best they could.

Also keep in mind where they Orcs came from. On Draenor they had to fight Gronn... the same creatures that could go a full 10 rounds with a dragon. If you played through Nagrand on a Horde character you fought the Falcon, wild Goat and Elephant for Nesingwary's quest chain... and they were some tough customers, none the least of which were the many tribes of barbaric ogres lead by that powerhouse Cho'war, and last but not least, Durn the Hungerer, the 30-foot-tall Gronn mountain... and these guys were in the Draenor Orcs' backyard. This is what they dealt with on a daily basis. Yes, violence and massive destruction is part of the way they are wired, but when you live in a place where a 3-story Gronn may wander over and decide to eat your village for breakfast, violence is going to very quickly become part of your psychological makeup. The Draenor Orcs were somewhat like the Fremen of Dune... they are powerful and capable of great violence because they lived in an environment full of powerful and violent enemies. They were still civilized and capable of restraint though. In fact if you played through the very, very long Horde quest chain in Nagrand, you have to bend over backwards to convince the chief of the Nagrand Orcs to do anything to save his people. They are a lot like the Tauren, in fact. Very quiet, contemplative, and slow to uncork the fury and power they learned to control. What Sargeras did was to remove that restraint, so that the Orcs were on full power all the time, so that the fury and violence that could bring down a dragon-killer was constantly seeking the next target, and then turned them lose on Azeroth.