I mean if Paris and Doyle can seem to stick it out while dealing with after college issues, why not Rory and Logan?
Perhaps because Rory and Logan and Paris and Doyle are all completely different individuals, with different thoughts, feelings, needs and lives?
In my view, Rory has always had her journalistic dream, right back from day one of the series. That she had absolutely no hesitation whatsoever when choosing the NYT fellowship over Logan/SF was very telling to me. Her career dream is still very much alive, at least at that point in the show. Why is it so wrong for Rory to choose her career, at this time in her life when she is still young, and just about to embark on her career? Yes, it is possible to have it all - if you are willing to work at it. But, timing is also very important and if Rory feels that this is the time for her to focus on her career first, that should be her right and shouldn't send so many people into a tizzy. As I said, Rory has always been very focused on her career and this shouldn't come as such a surprise. In the end, it is her life (fictional, as it is) and her choice. From a storyline pov, it seems very true to who Rory has always been.