Some people have to go to work on Sundays instead of rest to improve the wealth of their business or to get money to support their house or their families. We are supposed to rest, though and go to church to give thanks and praise.
People are not going to Church on Sundays. They don't want to go or have other things that conflict with it. They don't plan their schedules around church.
Many people decide to go to the mall or go shopping because for many, it is more exciting for younger people instead of sitting and listening in Church. It is a habit that needs to be stopped
Unfortunatly, some people chose not to rest on Sunday and go to church because they feel that they don't believe in that. It is the last day of the weekend before work, so why not go do something fun instead of "wasting" time in church?