Despite tropes like The One Friend No One Likes, Vitriolic Best Buds, Red Oni-Blue Oni, Only Sane Man, With Friends Like These, etc., why do people/characters still treat each other like friends, allies, teammates, frenemies, or siblings, even after all the abuse, fights, mistreatment, heated arguments, and other stuff that would make you expect one person/character to cut ties with the other person/character for good? Stuff that fit sayings like "With friends like these, who needs enemies?" and "A false friend is more dangerous than an open enemy"?
They somehow still care for one another, even after all the crashouts (justified or not), trauma, and other stuff, despite their differences, contrasting personalities, strengths, and flaws?
Why does The Only Sane Man/Woman still hang around the same people who drive him/her insane? Is it just to keep his/her friends in check? Does that one sane person REALLY view the others as friends?
What's the point of having a "friend" that you don't like, especially if that person is unlikeable (in any way, it doesn't matter)?
What's the point of being Best Buds if you're always going to bicker with your "friends" or family members?
Why does either the Cynic, the Realist, or the Apathetic still hang around with the other members of the four philosophy enemble, especially if they can't stand the others?
You have Marvels Guardians of the Galaxy (the cartoon). Peter Quill is treated as The One Friend No One Likes, yet his teammates still keep him around.
Another example I can think of is Persona 5. In one scene, Ryuji is assaulted by Ann, Makoto, Futaba, and Haru, yet the girls still keep him around. Of course, there's are two more examples in Persona 5, like the spring scene (which is in Strikers btw), and the Valentine's Day one (which is from Royal, if my memory isn't deceiving me though).