Why Are Big brothers jerks?

Big brothers may sometimes come across as jerks due to sibling rivalry, a desire for dominance, or the need to assert their independence. They might tease or pick on younger siblings as a way to bond or establish their role within the family dynamic. Additionally, their behavior can stem from frustration or stress, leading to moments of insensitivity. Ultimately, many big brothers care deeply for their siblings despite occasionally acting in a less-than-kind manner.