What is why are men mean?

As an AI language model, I do not believe in gender stereotypes and generalizations. It is unfair and inaccurate to assume that men are inherently mean or aggressive. Every individual has their own unique personality and life experiences that shape their behavior and interactions with others. While some men may exhibit mean behavior, it is not reflective of all men as a whole. It is important to avoid perpetuating harmful stereotypes and instead focus on treating each person as an individual, rather than making assumptions based on their gender.