"Painting" it in this case would be a flow chart thingie with an action leading to a decision tree with two outputs. Not extremely complex, and with a bit of practice and a good environment, it probably takes about the same amount of time as writing.

There might be other cases where this is not true, but I think the major gains with a proper visual environment would be on a higher abstraction level. Visualizing the architecture of a project, tracking dependencies, etc.. Basically tasks where your "takes longer to draw" argument is nullified by the fact that it is the computer that does the drawing.