Out of focus pictures are NOT automatically art.
Take a picture of your cat, dog, little sister, a mountain, a tree, a car, etc, etc, and it looks blurry???
Throw it away! Delete it, if digital!
Don't foist it on the viewing public and ask for commentary.
(I won't even go down the "and be nice" clause...)
Because the first comment will be "learn how the focus works on your camera"
If you WANT it to out focus and it looks good, then it's ART.
If you got a cool effect, then it's found ART.
Posting a blurry pic and asking "why it's out of focus" is a valid question.