I guess I knew that it was a debate, but I've never faltered on my belief that anime is "art" (and more probably... or at least it's different than what most people experience when they look at a painting). After my first Visual Novel experience (Katawa Shoujo), I was also completely aware that vns are/can be art as well...
While I bitterly resent derping around with definitions of art, for the sake of the argument I will say this.
For me, it depends on the level of intention. Technically, a piece of art should be intentionally a piece of art, but I've always found something haunting in art that isnt trying to be art. So what I'm saying is that I know it probably can all be classified as art, but I dont feel horrible in saying that some is, almost objectively, better art. For me, something like FLCL has this unimaginable artistic element to it that just makes it amazing. Something in the show is intentionally out there, but in this way that widens my view of it all and makes me feel something odd... idk, I never was a big fan of describing art or arguing about it, but anime definitely is art. (same too for vns and manga). Then again, a lot of things are "art". I'm just particularly touched by these particular ones u.u
Watching Kare Kano right now makes me aware of this so much more.