Why rebuild a city that’s vulnerable to hurricanes?

If exposure to hurricanes were a reason to relocate people out of New Orleans, then we might as well relocate everyone who lives in an area when events can be described by a scale, be it Saffir Simpson, Richter or Fujita. Out West, the earth is spider webbed with dangerous earth quake producing fault systems. And there’s tornado alley. And even areas that don’t have events measurable by a scale experience major natural and weather events. The Northwest will be blanketed by volcanic glass and subsequent snowmelt / flooding again. The Midwest regularly floods when rivers over top their banks. California fires are an annual threat. The Dakotas suffer annual ice storms. And finally, Hurricanes threaten the entire coast from Canada to Mexico regardless of substrate.