The problem with your question is that we haven't defined what "wasted space" is. If I want to have a couple of children is wanting one or two extra bedrooms r

The problem with your question is that we haven't defined what "wasted space" is. If I want to have a couple of children is wanting one or two extra bedrooms really wasting space? And if it is, wouldn't you still call it a loss of quality of life compared to the alternative?