Does everything have to "add real value"?

Anyway, this did add value to the guy who wrote it: He had fun doing it.

I've been thinking a lot about how one can differentiate between art and random shit. Once possibile filter I thought of was: 'Did it make the creator or the audience happy?' But even this doesn't work. Tolstoy disagrees with me on his very first point. http://www.csulb.edu/~jvancamp/361r14.html