While I'm in agreement with about 90% of the previous posters reasons for playing DS. Let me add a few more.
First... DS has the best looking ships!!!! I'm all about a P.H.A.T (Pretty, Hot, and Tempting) ride. I'll take the SWEET looking Fury, Mantis and OMG the Phantom over the SAD looking Defender, XS Freighter and Thunderclap any day.
Second....Jedi work with / for the PUBs whose politics can be just as shady as the IMPs. The way they treat the Twi'leks on Coruscant is jacked up. At least the IMP's worked to save Makeb. The PUB's and Jedi were like "You better get in where you fit in cause WE ARE LEAVING".
Third....and most important. I totally agree with Kevin Smith in the movie (CLASSIC) Clerks. Check it out
Nuff Said.