Should we all read the same thing?

Hi Kids,
I just got back from visiting all my sisters and their kids and some friends in York, Maine. We swam (the water in Maine was WARM!) and ate and danced and read books. Many of my sisters and some of my neices are teachers and we are all readers. I think this is why we started talking about whether it was a good thing or a bad thing to have all the kids in a grade read the same book in the summer. Some of the kids who were there said they were not bothered when they had to read a particular and one of the kids said she'd read a book this summer that was GREAT that she would never have read if it wasn't assigned. Other teachers and kids thought you should be able to read anything you want in the summer. What do you think?