But we still never really saw the common everyday Earth in those films.
Adding flavor to the Trek universe can only make things better. Especially since it remains one of the few optimistic futures in mainstream science fiction. Not being destroyed by robots, aliens or ourselves is a great thing to look forward to. Especially if we can see that our heroes come from a world familiar to our own but free of crime and poverty.
Plus we know almost nothing about civilian life in the Federation, especially Earth. As far as I know the first hint as that there are still reporters because we see them at the launch of the 1701-B.