Why do I like it?
* Fill vacant homes (as opposed to urban blight)
* There are many indirect economic benefits like money spent fixing homes, all the day to day purchasing that will be done by the new residents, etc.
* In some cases, individuals will be able to rejoin relatives more easily.
The urban blight thing is the one I care about most. I live in the East Bay of California and have seen certain neighborhoods totally fall apart as dozens of vacant homes attracted vandalism, drugs, and other forms of crime and caused remaining residents hardship.
EDIT: formatting