In many ways Brad was fighting for his right to exist against a twisted group of douche nozzles who blame him for the actions of his bio-dad. Under that logic Mike and David should wear the shame of their mother who although not entirely guilty of everything she is accused of is by no means a saint and deserved what she got. I don't feel a bit sorry for any of them.
While I like Claire I find her a bit patronizing of those less fortunate. She however is perfectly suited to take on her less than honorable cousin and uncle.