Speaking from the perspective of 22+ years in a one bathroom house with 2 daughters and having toyed with the idea of an addition on and off over the years. This to shall pass. Now the house is "just right", the girls have grown up and moved out. We all survived and everyone knows the art of taking a 3 minute shower. This experience has proven invaluable for the daughter who is a new mom while the other has 4 roommates now so she is always balancing bathroom time. But the real question is this - would I ever buy a one bathroom abode again? NOOOOOOOOOO but at least I know I could survive.