hk, it's a good question—someone else asked me the same thing on Twitter. It helps to understand my strong commitment to building a strong neighborhood, and to know more about the neighborhood I live in, which is close to campus in a college town. My street, for a couple of blocks in either direction, is a mix of owner-occupied homes and college rentals. If you head north a block or two, there are many more rentals than owner occupied homes. In other words, we're reaching a tipping point where people selling really nice, large homes (previously lived in by families) can more easily sell them to property managers who want to rent them out than to people who are going to live in the home, care for them, and be committed to the neighborhood. Not only are rentals typically not cared for in the same way as owner-occupied homes, but they also do not supply the neighborhood with committed, involved community members. That's the part that's even more important to me than the upkeep of the house. (In the case of the house being bought by the grandmother, what do you suppose will happen to the house in a few years when her granddaughter graduates and leaves town? It most likely becomes a long-term rental investment.)