Many of us "younger" people don't realize what we have nowadays. We had 8 kids and 2 parents in about a 2000 square foot house. A lot of people nowadays (here at least) move if every child does not have his/her own room. I NEVER had my own room. We need to really be thankful for what we have sometimes rather than complaining about what we don't.
You too were fortunate. You had one more than we did, but a lot more room. In the forties and fifties I think the average house was about 800-900 sq ft. Of course, we didn't spend too much time indoors. It was plenty big outside, and the best part of our lives.