Why should the Earth from Venus appear brighter than Venus from Earth?

Because Venus has a phase; however, during upper conjunction, Venus is brighter for Earth than Earth for Venus, because the distances between the planets are equal, but Venus is closer to the Sun.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.