What is the value or usefulness of using a printmaking process?

The most important lesson this week is understanding and being aware of the complex processes that go into printmaking. This discussion is to get you all to consider the value and reasons for artists to choose to employ printmaking processes. Think of the practical or the visual qualities that may cause an artist to make the choice. Citing examples either from the book or from independent exploration are two options for ensuring full credit and for adding to the discussion.
What is the value or usefulness of using a printmaking process?
What qualities are challenging to obtain in woodcut that may be easier in other printing techniques?
What is your favorite process and why? What was one print that captured your imagination/attention?