Videogames Are Not Art. What?

Okay, it really pisses me off when people say that videogames are not a form of art. Why not? I would love to hear the reasoning behind this way of thinking. 2D images are art. 3D/Computer generated images are art. 3D/Computer generated movies are considered an art form, too, as far as I know(I consider just about every Pixar movie a work of art). Why aren't videogames considered art? I have no clue. I consider several games works of art, like Call of Duty 4, Halo 3, Grand Theft Auto IV, Bioshock, Metal Gear Solid 4 and many others, in my opinion, are absolute masterpieces. Every one of those games are so cinematic, more so than most movies I've ever seen.

Maybe in the future videogames will be considered art. I don't think movies were considered art right away, but videogames have been around for what, 36 years(I think they've only been mainstream since '85, though)? Don't you think that's long enough? I just don't see how someone can actually have the gall sit there and look at something so fantastic such as MGS4 and not call that both a technical masterpiece and a brilliant work of art.

My one semi-semi-loyal reader(and anyone else who was unfortunate enough to find this blog) can discuss in the comment section.