I can see the convenience of having all your stuff on one level, just be sure you're not going to completely stop using the stairs. My dad, age 71, intentionally uses the restroom in the basement to be sure that he continues to get the exercise from using the stairs several times a day. His father retired at age 70, and quickly stopped doing much beyond moving from the bed, to the recliner, to the kitchen table, and so on. Soon enough, he couldn't do much more than that without being exhausted from the effort. I remember him coming to the basement once in his mid 90's to watch the grand-kids play ping pong. We all about fell over because we were so worried that he would... fall over, from the exertion.