Beyond what others have mentioned, bulbs give more flexibility. For example floor lamps or ceiling fixtures with multiple lights that can be dimmed/turned off i

Beyond what others have mentioned, bulbs give more flexibility. For example floor lamps or ceiling fixtures with multiple lights that can be dimmed/turned off independently. I also think, in terms of cost, an IKEA Trådfri bulb is a compelling alternative to dimmer pucks in the switch.