Family? People in general are messed up.
It's called dysfunction. It's been going on for ages, it like the deal with the dangling mobile, push a part of it one way it affects the whole thing.
Not always, just often.
Because they are insecure about themselves so they go out and make stupid decisions.
That's family, whether you like it or not, and all ways will be.
Because no one is perfect...we're all flawed and stuffed with negative qualities in some way.