If you're actually interested in buying a chair, there are a ton of options in varying styles, colors, and price points. Just depends on what you want. Yes, a "gaming chair" is technically just a stylish office chair, but some people like getting them just to complete a nice gaming setup. Both PC and console gamers use them all the time.

There's a pretty good list of budget gaming chairs here - http://www.gamerwares.com/budget-gaming-chair/