A few thoughts about using computer canvases, details, and new tools in general.
First, artists have been known to crop their canvases to capture the essence that they desired, and omit distractions that they found (on final viewing) detracted from their work. With a computer, you don't have to destroy your original. And I like that feature.
Second, before brushes, pallet knives, easels, canvases and the like, it was stone walls and fingers. Or perhaps clay and wood, depending on the clime.
Masters through the ages have taken great pains to perfect and present their art using the tools at their disposal. We'll be eternally grateful for the