The most obvious problem with Rome's concoction of the whimsical lost island of purgatory with no basis in Scripture is that it demeans and very nearly negates the work of Christ on the cross by pronouncing it somehow insufficient to cover the sins of His flock.
It is a man-made concept intended to keep the masses subdued and nervous when in fact Christ gives liberty to our conscience and cleanses believers by His perfect, completed sacrifice.
Make you perfect in every good work to do his will, working in you that which is wellpleasing in his sight, through Jesus Christ; to whom be glory for ever and ever. Amen" -- Hebrews 13:20-21"Now the God of peace, that brought again from the dead our Lord Jesus, that great shepherd of the sheep, through the blood of the everlasting covenant,
An excellent essay is found here...
All these doctrines and practices are tied to a heterodox way of looking at the process of salvation. Human effort and merit are somehow made part of Christ's work on our behalf. Purgatory is a negation of the doctrine of grace; it is a monument to a theology of works. And that, after all, is the way fallen man likes it..." "...It (purgatory) is a negation of the Scripture itself to hear a Roman pontiff express the following reprieve: "An indulgence of three years is granted to the faithful who read the Books of the Bible for at least a quarter of an hour, with the reverence due to the Divine Word and as a spiritual reading. To the faithful who piously read at least some verses of the Gospel and in addition, while kissing the Gospel Book, devoutly recite one of the following invocations...an indulgence of 500 days is granted." The man who penned these words was ignorant of the gospel of Jesus Christ.
Not at all. The souls in Purgatory are there because of the redemption that Christ has worked for them, and for no other reason. Were it not for the grace of the Savior, they'd be in hell.
If I at times appear short of patience with some Protestant posters it is this habit to erect, then demolish straw men, which disrupts serious conversations.