The answer to 'why is my drain clogged' is that drains can become clogged for a variety of reasons, such as hair, soap scum, food particles, or other debris building up over time. Some common signs of a clogged drain include slow draining water, gurgling sounds, or water backing up in the sink or tub.
If you have a clogged drain, you can try some DIY solutions like using a plunger or a drain snake to remove the blockage. However, if the clog is severe or you're unable to clear it yourself, it's best to call a professional plumber. They have the right tools and expertise to safely and effectively clear the drain without causing any further damage.