It's slightly amusing to me how many grown adults are still afflicted with "Monkees syndrome," that is to say an idealized image of what a band should be like that's based on things they saw manufactured on television that weren't actually real.
Yes, we all remember the old Beatles movies and the Monkees and the Partridge Family and all of that other feel-good stuff that made us believe, as youths, that a band was some sort of rarified family experience. Maybe we longed for that sense of belonging and it's part of what propelled us toward playing music and putting our first band together.
But life is not like TV and movies. Bands aren't marriages. They aren't even families, though sometimes they fight like families. They aren't all best friends, either. Even the Beatles decided to go their separate ways when they got sick of each other.
This circles right back to the thing about changing your expectations. If this sort of fictionalized experience is what you're expecting, you're always going to be disappointed.