The purpose of Saturday and Sunday is to give the people from each respective religious group their Sabbaths off from work. This is prescribed by each religion Saturday for Jewish/Christians and Sunday for Christians.
The majority in most European countries and America.

As my grandmother used to say work six days and rest on Sunday. You better believe if you tried to do some work on Sunday you heard about it. Ahh growing up Muslim around Southern Baptists :-) "yall are going to hell" can only be said so many times before it becomes comical.

I would like to think if America and European Union decided lets change the weekend to Thursday and Friday to match the Oil Producing nations. Would the Jewish and Christian majority in their countries go for it? The answer would be no no no and as we say hxll no.

It has nothing to do with business.

Act your age not your shoe size