If I may inject myself in this debate The Jedi really didn't have a lot of other options. Thier choices seemed to be either A. Join the war and try to keep a darksider from taking over the galaxy or B. Sit there and do nothing. Option B seems outright selfish IMO. If I may make an example from legends it's kind of like the Mandalorian Wars. The Republic was under attack and the Jedi shouldn't abandon them. The point I'm making is that it's kind of a catch 22 situation.