So why do we get beds for our children?

For the first 5 years of having children we did not have any beds for our children. The kids had a mattress on the floor. For the most part it was a new matress, but there was no bed frame. (just in case you think we are depriving our kids, know that the adults do not have a bed frame either.)
However, about a year ago, a nieghbor asked us if we wanted some bunk-beds for the kids. We said yes, and Calvin was very excited for the top bunk. It worked well for about 6 months, at which time Calvin wanted to move back to the floor. This made the arrangement Calvin on the floor (again), and caleb on the bottom bunk. About a week ago, Caleb wanted to move to the top bunk. Calvin and Caleb argued about it for 20 minutes, eventually the deal was Caleb could sleep there for one night, and then it would be come Calvin's. On the second night, Caleb moved down to Calvin's old spot on the floor. 4 nights into it Calvin wants his spot on the floor back. Caleb will not budge. Now, Calvin and Caleb have two different spots on the floor, and no one in in the bunk bed. However, it is a great place for storing toys.