Apart from the speed at which it's possible to compose illustrations in comparison to using actual paint on paper, is the way I can reach into the image at any point to modify it. Including after completion. I'm using Serif's Affinity Designer, by the way -the only illustration software I've found that can challenge the behemoth that is Adobe Illustrator.
I hope you like it. I am trying to reel you in. Do get in contact if you have a project that requires an imaginative, and colourful imagery that gets your point across.