Perhaps Maslow thought that this was a good order for people to satisfy their needs, it does after all make sense. It puts people's needs before their wants, which is what most people have trouble doing. A lot has changed in people since this was created in 1943. People have become liberated and more free, more open about certain beliefs and the ability to buy whatever they want. I also believe people lived by his model more often at the time it was presented. However now, it seems to be more of the ideal rather than the widely practiced.