Not because there's a problem with the homes or the locations.
It's because somehow, an entire generation has grown up with the idea that the one biologically necessary act to further the survival of the species...is not a good idea.
Maybe it's marketing, maybe it's the message, maybe it's the intensity of school causing people to believe that workaholism is necessary, maybe it's pride that working for somebody else is more important to people than raising a family and maybe it's student loan debt making the idea of the costs of raising kids difficult to bear, maybe it's culture that has changed the relationships between potential parents enough to make them incompatible.
Whatever it is, something serious has happened to cause that many people to go against biology.