Undergraduate and Graduate History degrees can be rewarding to an individual and useful as a citizen. Expert historians within the department can help to make sense of a complicated world.
A History degree is probably the most flexible and far-ranging. It is excellent preparation for a wide variety of fields -- law, teaching, business, public service, journalism, and even medicine. Increasingly, the professions and professional schools are looking for applicants who have broad interests and backgrounds, and analytical and verbal skills rather than narrow field specialization.
Therefore, history in particular, with its breadth of outlook and coverage, its stress on learning how to read critically and write effectively, will stand you in good stead regardless of what you do.