I wish that I'd been more careful early on, but I wasn't. Now I use as many keyboard shortcuts as possible, have a much more ergonomic work environment, stretch, etc. If I had more money I'd get the better pads and pens to work with, but I'm not at that point yet. Anyway, I'm pretty careful, and I try to get good habits instilled in my students early on.
Audiences expand the mythologies of a creator's world.