Well it is true that what defines art is a decision of the artist. But the viewer of it still has to accept it as such. I don't view some stuff as art while others do it, and I respect that (best example is Picasso, I think his stuff is close to child drawings, others praise it to heaven).
Sure. But if you don't do what is important for yourself, for your soul, heart and mind it doesn't matter how many people like your results. And there are some Light Painters out there doing pictures without any part of there soul only to please there groupies.
Yeah. That's what I meant. You can't please everyone, and you don't have to either. Do what you think is right and that is enough.