The answer to 'why is my switch' is that there could be several common causes, such as a loose connection, a faulty switch, or a problem with the electrical wiring. Symptoms may include the switch not working, flickering lights, or buzzing noises. Solutions can range from tightening connections to replacing the switch entirely.
If the issue is simple, like a loose connection, you may be able to fix it yourself. However, for more complex problems involving wiring or a faulty switch, it's best to call a licensed electrician. Electrical work can be dangerous, so it's important to have a professional assess and resolve the issue safely.