Annie Hall.

Woody Allen in his 1977's movie 'Annie Hall',  sums up an understanding of how relationships are utterly absurd and that love inevitably fades, although people still crave relationships:

"...And I thought of that old joke. You know, the, this, this guy goes to a psychiatrist and says, 'Doc, uh, my brother's crazy, he thinks he's a chicken,' and uh, the doctor says, 'Well why don't you turn him in?' And the guy says, 'I would, but I need the eggs.' Well, I guess that's pretty much now how I feel about relationships. You know, they're totally irrational and crazy and absurd and - but uh, I guess we keep going through it because most of us need the eggs...."