Now seriously, can you explain the difference between
If you want the Socialist [or any other] Party candidate to represent you, you join the party [which may or may not include paying dues]. If none of the parties' candidates represents you, you can form your own party. Those whom the Gods wish to destroy They first make mad. -- Euripides
That bothers me, too. Also, it semi-institutionalises the two-party system. *Lunatic*, n. One whose delusions are out of fashion.