St. Thomas Aquinas, the 13th century theologian, is a pillar of the Catholic Church. He’s best known as the author of the Summa Theologica, his classic summary of the church’s teachings.
Under Question 94, “The Relations of the Saints Toward the Damned”, he explains that:
Wherefore in order that the happiness of the saints may be more delightful to them and that they may render more copious thanks to God for it, they are allowed to see perfectly the sufferings of the damned.
Whoever pities another shares somewhat in his unhappiness. But the blessed cannot share in any unhappiness. Therefore they do not pity the afflictions of the damned.
Even in heaven we would be as children, and nasty children at that.