Take shading, for example. It's easy enough to shade the interior of an object, but very tedious to shade just portions of objects. With a paint program, it's not hard to indicate the progress of the Black Death across Europe. With a draw program that same map is extremely difficult. I have argued for some time that one reason humanists lag behind the scientists in the use of computers, both in teaching and research, is that what we do is so much more sophisticated that what scientists do.
Historical maps are another case in point.
All scientists and social scientists want to do is to display numbers graphically over a map. Historians, on the other hand, need to be able to do actual cartography. As yet I've found no product that meets the need satisfactorily. It runs on all Macs with 512K or more. This provides Map outlines of the US and the world along with tools for editing the maps.