I love how every article about tattoos on here attracts holier-than-thou pearl clutchers making sweeping judgements about people who get tattoos. The person you so generously condescended to up there is far from the exception to the rule. People who get tattoos do so for a variety of reasons, and there is a very large segment of the inked population for whom "coolness" has little to no relevance. We are well aware of the fact that tattoos have not been truly countercultural in American society for quite some time now. You are not adding anything new or relevant to the discussion, trust.

I'm sure there are people who get Horde tattoos just because they look cool ('cause, really, they do look cool). But if you actually took a moment to talk to people with Horde tattoos, you'd realize that for a lot of them, it's less about proclaiming one's fanboy tendencies and more about taking pride in what the Horde represents to them. Strength, honor, surviving against all odds when the world is out to destroy you, looking out for your tribe (however you choose to define it), etc. These are ideals that transcend a video game, and will probably still mean something to the bearer long after WoW and Warcraft and general have been forgotten. That's a damn good reason to get a tattoo, IMO.

I don't have a Horde tattoo myself, even though I do plan on getting a different video game-related tattoo (the Blood Sin from Vagrant Story), and that was chosen for similar reasons. But if I did get a WoW-related tattoo, it would probably be the Icon of Blood and/or the Icon of Torment. Both of those symbols mean a lot to me, not just because the Sin'dorei and the Forsaken are my favorite races, but because of what they represent in terms of lore.

As for regret, it happens for some people, but I think even tattoos you grow to regret can have a purpose. I hold the body-as-canvas view, and in that way, tattoos are a way to tell the story of a person's life. Even that soccer mom's cliched butterfly on the lower back may mean something, even if it's that at that point in her life she finally felt free enough to do something she was always told was "wild". Or that she was a dumb follower of fads. Mine are a mark of my spiritual path, and even if that path changes, it's still a part of my life's journey.

tl;dr: you are ignorant and need to stop making sweeping judgments about tattoos and the people who get them. To me, that's a far greater sign of mental instability than people choosing to put things on their skin. Everyone is different.