Greed or service?

Forgive me, but I`m going to have a moan today!
In this day and age is there really anyone who desperately can`t manage without shops being open for just two consecutive days? With the advantages of today`s living with all the freezers, fridges and long life foods around, the mountainous trolleys of goodies that everyone buys for Christmas “just incase” and then continues eating for weeks afterwards, Why do shops need to open on Boxing Day?
Is it really just to provide a service, surely the real reason is the greed of the bosses. Those bosses of course not working themselves on Boxing Day, they no doubt have the 2 or 3 or even more days off to celebrate the holiday. It seems to me that things are going backward instead of progress. It seems to be going back to the days of Scrooge, where no consideration is given to the workers.