Peggy has an affair with a married man in the first episode and many more throughout the series. I don't blame the characters for hustling at work because everyone needs to make money, I blame them for their completely horrible and short sighted personal life decisions.
I can't think of any worthwhile stories based solely on rational, moral characters. I mean I love watching Great British Bake Off as a palette cleanser for exactly this reason, but real characters are flawed, make mistakes, and are involved in real life conflicts.