From Memory-Alpha:

Although it may not seem apparent to viewers initially, this episode is another example of Ira Steven Behr’s re-examination of Gene Roddenberry’s twenty-fourth century utopia. Comments in episodes like “The Maquis, Part II”, “The Jem'Hadar”, “Paradise Lost”, “For the Cause” and “Nor the Battle to the Strong” had served to darken Roddenberry’s vision of the perfect harmonious Federation and an Earth where no problems exist. This episode’s example of a darkened ideology is to be found in the character of Richard Bashir. According to Ronald D. Moore,“The Federation is a very nice place to live. But that doesn’t mean you can’t be a loser and you can’t screw up. In the twenty-fourth century, everybody seems to have a job, and everybody’s taken care of and everybody has food. But there are people who are just not going to make it. And Bashir’s dad is like that, the kind of guy who’s always posturing himself as a success, but never has succeeded at anything.” (Star Trek: Deep Space Nine Companion)

TNG had the Rozhenkos, DS9 had Joseph Sisko but Bashir’s parents are very well rounded and deserve a mention (I mean they did go to a black market gen eng to soup up their son but they are memorable).