The answer to 'why is my bathroom dusty' is that bathrooms can accumulate dust and dirt due to a combination of factors, including moisture, poor ventilation, and the presence of hard surfaces that attract and hold onto dust particles. Bathrooms are often damp environments, which can cause dust and dirt to stick to surfaces more easily.
Additionally, the lack of adequate ventilation in some bathrooms can prevent the efficient removal of moisture, leading to the buildup of dust and grime over time. Hard surfaces like tile, porcelain, and chrome fixtures also tend to attract and hold onto dust, contributing to the overall dusty appearance of the bathroom.