Exactly, which is the problem with most of the "whoop! whoop! prepare for disaster! make a kit!" ballyhoo. My likely disaster isn't your likely disaster, so my kit isn't gonna be your kit. Even talking about a kit that will be carried on a bike, there are still too many unanswered questions. Since you're on a bike, it's a given that you're evacuating, but evacuating from what? How does that affect which routes are open to you? Are you evacuating to a location where everything is intact, or will you be without access to clean water, food, shelter, heat, electricity, medical care, etc.? There's really no point in assembling a kit until you have answered those questions.