After seeing all the sins in Hell, one has work of purification to do in Purgatory. The envious who looked with hatred upon other people and wanted to deprive them of their happiness out of resentment have their eyelids sewn shut. The wrathful walk around in blinding black smoke, which symbolises the blinding effect of anger. The slothful have to run, the greedy lie face-down on the ground and pray, the gluttonous are starved in the presence of trees whose fruit is forever out of reach, and the lustful have to go through a wall of fire as a means of purification.
Purgatory is like our real world, it is a place of transition. Heaven is above us, and hell is below us. We all have inner work to do. We must rather strive to lead as virtuous a life as we can. The goal is not perfection, but wholeness.