That&#x27;s sort of the point of satire.  Family guy isn&#x27;t just making fun of current events and society, it&#x27;s also making fun of it&#x27;s source material and the way <i>it</i> makes fun of current events.  Peter is Homer taken to the extreme, such that when you question why Lois would stay with such an ass, you&#x27;re forced to consider the lesser, but still relevant case of Marge staying with Homer (which to its credit the Simpsons have addressed a few times).<p>That said, Family guy really just used the template as a springboard, it&#x27;s more about the absurdity of life and our culture than the Simpsons, which relies heavier on social commentary.