Traditional (physical) art is posted here from time to time. For instance, fshoo` will paint
, and I occasionally drag smudgy pencils across thin strips of paper
I think you see a lot more digital art around because it's quicker and cleaner for most people to make and post online. I sketch offline quite a bit, but I will never bother to scan/photograph+clean+upload a fraction of it.
Also: digital painting has an "undo" command.