Good post
by Tom Murphy about why you would want a career in public relations.
One that I would probably add is that it is changing. It is becoming a
real PROFESSION.
The quality of education offered by universities is impressive (take a look at PR Studies and Mediations for just two examples of good PR blogs by UK academics).
The newly acquired Chartered status of the Chartered Institute of Public Relations is also important (not that the link is still ipr.org.uk as cipr.org.uk takes you somewhere else!).