In WoW lore, the first Worgen were derived from an ancient clan of Druids known as the Druids of Scythe. Along with worshipping the wolf Ancient Goldrinn, their chosen form was Worgen; however, they went mad due to the form's feral nature. This forced the other Druids to make the decision to keep them controlled, putting them into an eternal sleep in the kingdom of Gilneas.
Later on, in the aftermath of the Second War, the humans of Gilneas sealed themselves behind the Greymane Wall in a political attempt to keep the area isolated. However, years later after the Third War and an additional civil war that had broken out in opposition to Gilneas' isolationist tactics, the Worgen curse had spread through the zone and transformed almost all citizens into wild Worgen.
The Worgen curse can be credited to the Night Elves, who inadvertently helped to develop a plague that struck Gilneas and turned the inhabitants into Worgen. In the Cataclysm expansion we see that within the walls of Gilneas a partial cure has been concocted, one that lets them retain their human mind even while transformed. Naturally this rocky and war-torn background has given the Gilneans a slightly jingoistic edge.
In the words of Genn Greymane, King of Gilneas: "Damn the Orcs, damn the Alliance, and damn you! The last thing Gilneas needs is sponges from other nations drawing from our resources, Dalaran wizards meddling with our affairs, and someone else's enemies killing our soldiers! Gilneas is its own nation, and it always will be."
You can role-play in real life too! Yeah! To hell with things! Chicks dig ennui. When your teacher asks if you are present during register, stub a cigarette out on your forearm and sigh, “Who the f*** knows man, who the f*** knows.”
After the partial cure is developed, Gilneas' citizens begin the process of rebuilding the area. Unfortunately, the Forsaken send a ship to capture the area and use it as a Horde port. While the Worgen citizens are busy fighting off the fleets, the Cataclysm destroys the Forsaken's ships, shatters the Greymane Wall and destroys most of Gilneas. This situation forces the Worgen to forge a pact with the Alliance and ship off to Darnassus, giving the werewolves a long-term refugee status in the game.
Despite being portrayed as immensely nationalistic and occasionally xenophobic, they currently have less of a national presence than the Horde’s Goblins. While Goblins get a district in Orgrimmar, a decently sized racial town, Azshara, Kezan and Lost Isles, Worgen have a miniature district in Darny and a Gilnean style village in the Blasted Lands.
Stand in the centre of the nearest major capital and paw continuously at your keyboard for hours so that every message is a string of random characters, in caps, just like an actual thumb-less dog might.