Blind cleaning is a time consuming, tiresome and a neglected chore in most premises. Avoiding cleaning your blinds allows dust to settle which in turns assists in the process of pitting (a form of corrosion). This irreversible process affects the look, operation and longevity of your windows.
Most importantly is the health issue of the people around you. Dust affects all of us in one way or another because it allows dirt, mould and germs to flourish. This is of great concern to ones who suffer allergies, asthma and the like.