*Bluebelle, A hand guiding s cursor is exactly the same as using a brush or pen. The artist using the cursor is jsut as much using their brains and unique ability to put paint on paper. each stroke could ruin the picture it could run or be too thick or too thin or the wrong colour all those same decisions have to be made about colour, line etc.
As has been pointed out, most of David Hockney's recent art has been digitally produced, yet the style and the skill and genius are exactly the same as in those paintings he did with brush and paint. He has made the same decisions about his digital works of art as his others.
If I were to ever be mad enough to have a go at digital art, the work I would produce would be as badly planned and executed as anything I might attempt to do on a piece of paper or canvas - and anybody seeing it would instantly recognise it as such.
Nor is there any difference between digital art and a photographer. Both he/she and the digital artist needs an eye to see the beauty and then recreate it, one with a camera, the other with a mouse.
I have just noticed you talk about taking photos and enhancing them. Are you mistaking tweeking photos for digital art? If so you are entirely mistaken. A digital artist starts with a blank screen, like a blank piece of paper and designs and draws their image and then adds and layers colour over it. It is exactly like drawing. Do you think what David Hockney now does is tweak photographs, surely not!