Happycat, for the reasons you gave, I used to love having an upstairs. My ankles hurt so bad that stairs are hard for me now. Another nice thing about having an upstairs is airflow. With a one level house, you don't get that. I love having the upstairs windows up at night in the warm weather and not worry about anyone breaking in when you have an upstairs. Also, on a warm day the air coming in the windows upstairs drifts down the stairs and cools the downstairs too. Even when there doesn't appear to be any air moving into the downstairs windows, this seems to happen. The feel of a two story house is different too. It has a grander feel, whereas my house now is kind of boxy. I live in a ranch house now, with a partially finished basement and I really miss my two story house. Physically, I'm not sure if I could do a two story house again and of course, with a two story house, you have to have a planned fire escape plan.