I would assume that most people would evaluate what problems they are likely to face where they live and where they work, and design a kit for those problems.

It isn't likely that anyone is going to be fully prepared for everything, everywhere, all the time. That would cover too much ground and you would have a lot of stuff. It would seem pointless to stuff a car with gear, and then not have enough room to take people or pets if you have to leave in a hurry.

Sue