Well, next time you go to cvs ask them what they think the oil an canvas crowd thinks of their "art". In many circles there is more than a little of the same attitude where anyone using a computer rather than pigment and brush is concerned! The early animators at Pixar went thru much the same thing from the cell animation painters... Now a days it's passing hard to find a good cell painter who doesn't at least dabble in cg. It's all relative, those schooled and "brought up" in one discipline will alway disparage those using a different one. I expect much the same things were said when artists started using pre ground pigments (and as some who has trained in grinding pigments by hand, let me tell you, it's great fun to learn,. but I'll use stoe purchased pigments for anything but a teach aid, every time!) In the meantime, do what you enjoy. Art is, as they say, in the eye of the beholder, not in the mouth (or in this case fingers) of the critics.