They keep coming with excuses because they keep being asked for excuses. You can't force people who don't want to live with the poor to live with the poor. Or,

They keep coming with excuses because they keep being asked for excuses. You can't force people who don't want to live with the poor to live with the poor. Or, at least, nothing good will ever come out of it. Ever heard about things like contempt and hatred? Humans are quite capable of ridding themselves of unwanted relationships.