Certainly things like human rights, equality between races and sexes, the right to vote, etc. is a good thing. However, thinking about things in general: equality is an ideal, not a reality.

For example, not all students are admitted into Harvard or UCLA. Inequality is what creates rank, and an elite status.

Therefore if 100% pure equality were indeed made realized, it would just uphold mediocrity. If we strive for a more beautiful, interesting, and elevated society, inequality is a must.