For many people, siblings were their first friends. They played together, shared secrets, defended each other at school, and spent countless hours creating childhood memories. During those early years, brothers and sisters often form some of the strongest bonds in life.
Yet something surprising happens in many families. As siblings grow older, some become distant. Others argue more frequently. Some barely speak despite being inseparable as children. This raises an uncomfortable question:
Why do people who loved their siblings as kids sometimes start disliking them as adults? Psychology says the answer is rarely about hatred. More often, it involves changing identities, family roles, unresolved rivalries, life comparisons, and expectations that develop over time. The surprising truth is that adulthood often tests sibling relationships in ways childhood never could.
