The metaphor meant to show how maybe you can get to the bag and maybe you can't. Are people just supposed to bring this bag everywhere they go just in case? In that case the bag will need to be pretty small and only contain necessities that won't last very long. What about a single mother with multiple kids and no car ? She can only fit so much in that stroller and it won't last her long. Elderly people can't carry much but they need to get places as well. Sitting in their home when a disaster hits can lead to them being forgotten. I mean what blame are we placing on somebody who wasn't prepared enough in this situation ? Only having enough diapers for a few days as opposed to a week ? I don't really understand how to blame somebody for not being prepared enough for a flood. Shit just sucks.