Hey D... maybe because he is the "baby" of the familly and your mom and sister are so used to taking care of him and grant him everything he wants, and they might of expected you to do the same thing by taking all his b.s. and not doing anything about it like telling him to get a job and find a place to live ???
As far as the wife thing i don;t really know maybe they never really liked her or maybe it was the easiest thing to do call her names.
Eric
