I finally saw it last night and don't really understand most of the questions you folks had. Except Andy had a great point earlier with Leia belonging to the resistance. They did a terrible job of explaining within the confines of the movie why the rebels wouldn't have been in charge and why there would have been a need to create a resistance. Terrible work not explaining it within the confines of the movie. Especially when it could have been easily explained.
Also...R2 had been sitting there all these years with the data and no techies thought hey, let's crack this droid open and take the data? Why would Luke have left a map to his location and then make it so only he could activate said information? How did that last missing bit of information get loose in the first place? How is it Luke was unable to sense what was going on with the force or at least his probable daughter?
luke felt a disturbance in the force (han dying supposedly)
so he reactivated r2d2
you think he looked surprised when that chick was on his island?
he was waiting for her
cmon
He never felt anything else happening in the force during his hiatus? Didn't feel his daughter growing stronger? His nephew becoming increasingly evil? But fine.
Why would he have a map to his own coordinates locked away in a droid that only he could activate? Did he think he'd forget where he was? And how did R2 have the entire map except that one piece? Luke locked up the location except one piece? And no techies thought hey, let's just hack the droid and take the map?