Looking into the many opinions is great if you want to do some important job, and survival is definitely serious job.
I never consider myself some kind of guru or expert who know the best, I just have some experience that I am willing to share, but I am also trying to keep my mind open to other folks opinions, and there are definitely good knowledge out there.
We are all here to learn.
Anyway topic of survival in urban or rural settings is one of the topics where discussion (and pros and cons ) will go forever, but that does not mean that is nothing more to say or hear (learn) about it.
So thank you all for contributing!