There may be many answers to this question . A beautiful explanation I received through a Whatsapp forward recently.
A wealthy businessman with his family had the darshan of Mahaperiya 🙏🙏 ( His Holiness Jagathguru Shri Chandrashekharendra Saraswathi Mahaswamigal or the Sage of Kanchi )
The rich businessman had many problems in life and so sought the blessings of Saint to overcome them.
He asked the Saint "Why do I face so many problems "
Mahaperiya asked him whether his family had the tradition of drawing kolam daily at the entrance of the home
He said "Yes "
Swami asked him who drew the kolam. The businessman's wife replied that it was drawn by the servant.
Swami smiled and replied , "Drawing kolam is the way of offering Pooja to Bhoomadevi to whom we are indebted. Since your servant draws the kolam , she gets the blessings of Bhoomadevi"
So let us follow His advice and draw kolam daily at the entrance of our homes and get the Blessings of Mother Earth.