if you've ever seen sitcoms like ''Fawlty Towers'' or ''Some mothers do 'Ave 'em'', you'll see that lots of sitcoms revolve around a mad married couple. Francis and Piama from ''Malcom in the Middle'' are like that, aren't they?
Yes, quarrelling couples are one of the standard themes of situation comedies. I would say though that the prime example of these on MITM are Hal and Lois! With Francis and Piama coming in close second.
A lot of sitcoms revolve around dysfunctional couples, like the ones you mentioned, Married with Children, Unhappily Ever After, All in the Family, Shameless, The Middle etc.
All the people are so happy now, their heads are caving in.
I'm glad they are a snowman with protective rubber skin.