urban survival, good or bad?

You will hear many talk about surviving in an urban environment as not being the best scenario. Most talk about heading to the hills, which would probably be my choice also. As I watched a recent youtube post, I start to think about how many resources there would be in an urban area in a "SHTF" situation. Lets see, there will be lots of people trying to leave these areas which means there will be lots of STUFF left behind. There will also be a large choice of home base locations to choose from, multi-story buildings will be ideal because of there views and distance from ground level where most of the gangs and looters will be focusing their attention. Cities also offer great firing lanes for defense. I will be brainstorming this idea more in the next few months, stay tuned. Thanks to Yankeeprepper for some good ideas, check out his youtube, he has lots of good information.