re: ALL IN THE FAMILY...
Hmmmmm... I didn't know Gloria and Mike split because of infidelity worked into it...
I remember the couple moving to California with their son, Joey, and the two sleeping separately, hence hinting to Archie and Edith that they were getting a divorce, (among doing other things that were a sign of growing apart) and on that show, we learned to be used to not bring so touchy about things that AITF had pioneered...
Really, though, the show had become quite boring without son-in-law "Meathead" Mike acting like tough foil towards Archie, who was his foil, too, when daughter Gloria moved to California with the grandson because of hubby's new job, hence seeing Archie lingering and lumbering around with niece Stephanie taking over, became the beginning of the end... Nothing afterwards was quite the same... Ditto for ARCHIE BUNKER'S PLACE, that Mad Magazine saw fit to do a Scrooge-like parody of around Christmas, acknowledging how Mr. Bunker had turned into too much of a nice guy, in contrast towards his initial character...
Other couples left to becoming single mates were Barney Hefner (wife left him?) and the Lorenzo's, with no more Frank, just Irene who flirted with Stretch Cunningham, Archie's co-worker, who later died, then no more Irene, either...
-- Dave