You should also keep in mind that over the course of your life, your body goes through many changes. The natural aging process and various stresses and injuries that are inflicted upon it, will very likely require a different level of firmness in a mattress. With traditional coil spring mattress beds, this would mean that you would need to purchase a new mattress, but with an air bed, it is simply a matter of making a firmness adjustment to your air bed mattress to match your changing needs.