True.
I have 4 siblings. Three are very successful, have nice homes (one brother has multiple homes), intact marriages, and never gotten so much as a parking ticket.
One sibling has been married 4 times, is broke despite years of grinding and earning great money, has been arrested, and is a recovering alcoholic.
No one is quite sure what happened to him. He just went down a bad path and kept going.
I can attest my parents were loving, firm, religious and hardworking people. That one brother broke my father’s heart.
Really sorry about that, but, in my old age I realize it is true in many families. Life is what it is.