I've been enjoying the comments and I think this is an interesting, thought-provoking thread. Thank you.
I do not sell my work, but the older I get the more I realize this stuff will sit here and perhaps will disappear (hopeful my kids will not simply throw away the stuff when I'm gone--I hope not) but I just can't part with my work because I enjoy playing with and photographing my models.
Having said that, I do not mind generating a bit of money off books, after market parts and decals, etc . . . all of us know it can get to be quite an expensive hobby so every little bit that comes back to you helps keep you going.
Everyone has a right to profit from their art. Why not?