When my boys were babies, we lived in a 3 bedroom house. They each had their own bedroom. After a while, I decided to get bunk beds and move them in together, so that I could have a sewing room. I felt very, very guilty about depriving them of their individual rooms to fulfull my "selfish" needs.
Eventually, we moved into a 4 bedroom house, and the boys could each have their own room, and I could have my sewing room. (Back in the day, I was a SAHM and had the time to make most of my own clothes.) We took the bunk beds apart, and each boy (by then ages 2 and 1/2 and 4) has his own bedroom again! I was relieved of all guilt and ready to settle in happily. However, every night when I went to check on them before going to bed myself, this is what I would find:
Today the one on the left is 36; the one on the right just turned 38. They both are Dads and each have 2 kids who prefer to share the same room . An inherited trait, apparently!