What are the advantages and disadvantages of such low voltages?

Low voltages offer several advantages, including enhanced safety, reduced risk of electrical shock, and compatibility with a wide range of devices. They also often allow for simpler circuitry and lower energy losses during transmission. However, the disadvantages include limitations in power delivery, which can necessitate larger currents to achieve the same power levels, leading to increased heating and potential inefficiencies. Additionally, low voltages may require more extensive infrastructure for longer distances, as voltage drop becomes a significant concern.