For me its a hobby and not art. I think of myself as a model maker and not an artist. Kind of like those guys that worked on the original star wars along time ago but no were as good. To me, it's a way to have a cool figure without waiting for the commerical version.
It does however make me feel a little uneasy about people that treat this hobby as a business <cough>mrtanner<cough>. That kind of stuff reminds me of the cheap knockoff pictures you see on street corners being sold out of a van. I think it lowers peoples perception of this hobby.
Oh great, Phruby...now we're going to have to fight with the guy again!
I have trouble selling customs I make, as I kind of form an attachment to each one I do, and it's hard to part with them. Well, except for clones. I can make clones all day and then part with most of them, because I'm not as invested in them since to me, they're just a repaint.
I am fond of my ARC troopers. though.