The answer to 'which is better dimmer switch or' is that dimmer switches are generally better than on/off switches for lighting control. Dimmer switches allow you to adjust the brightness of your lights, giving you more flexibility and energy savings compared to a basic on/off switch.
Dimmer switches come with several benefits - they let you set the perfect lighting level for any task or mood, they can extend the lifespan of your light bulbs, and they reduce energy consumption by allowing you to use less electricity. They also add a touch of sophistication and ambiance to a room. However, dimmer switches do cost more upfront than a standard on/off switch, and they require compatible light bulbs to function properly.