I really hate to be a devil's advocate... to cody the deveil... but in the case of art, there are different styles, and appreciations. What kind of art is it? Generally speaking, different types of artwork are appreciated by different people. In theory the artist could create a piece that doesn't belong to any kind of existing style, and appreciate of their own accord (which could be a link to Cody's narcissism point)... otherwise, the artist has likely appreciated other artists' creations in certain styles, and come appreciate a certain style him/herself. And so, appreciation of their creation would still be connected to what the community of likeminded artists would appreciate. If I came to appreciate realism, then if I appreciate my own art, it's likely because I believe it 'fits' sufficiently into the style of realism - that others would appreciate my creation in that style.
Now of course one could argue that it's not true appreciation, because it becomes a matter of comparing one's creation to others', and not just appreciating that which the artist independently and uniquely created from their own vision, regardless of 'style'.
Nonetheless, I can see a (vague, slim, perhaps) parallel to the topic at hand, so I don't think Cody's out in left field (yet) with his response re: art appreciation. Appreciation is still, technically, based on a community perception of style, and how that artist interprets their vision in such a way.

I think the question may be, can an artist create a unique piece of artwork, without influence - at all - from external/community subjectivity or experience, and still appreciate it without being narcissistic?
What about the first artist ever to create a certain art piece in a style that hasn't yet been named? Did the style exist before that piece, but unnamed, or was the artist perhaps egotistical enough to name a style based on his piece? Or was someone else appreciative enough of the piece, considered a certain style, but sufficiently different to call for a new 'style'? Or would that artist be an example of what we're looking for - true appreciation of one's own work without basing it on anyone else's possible opinions of it in a greater context?

I don't necessarily agree with Cody's points across the board, or how he phrases them, but I don't think it's a cut and dry argument against his point of view.

*goes and scrubs himself frantically*