Former RC here, had a very good education in the RC doctrine. This was in the 50's and 60's. Kinda dropped off the rack about 1965. I don't embrace the religion but I appreciate the community and the way they've designed their church service buildings.
My take is that RC's developed their doctrines on hell, purgatory, satan and their view of heaven from a mix of early Christian records and doctrines, Jewish history, Roman philosophy and dieties and ancient Egyptian mythologies. The history of Christianity includes Roman influence, Constantine making it a legally recognized "state" religion. It all gets a long way from the Gospel records and the earliest epistles that spread the new doctrine of salvation in a faith in Christ.
Me? I believe that some of all that just reflects the simple realities of what we in fact see in natural life - humans die and our bodies turn to dust. If we're buried we are in the ground, in the dark and we have no consciousness that we know of. Dead bodies exposed to the elements look deformed and misshapen and frightening. The grave, the holes in the ground, the disposal and destruction of the human remains - all that's cold, dark, terrible.
Our consciousness isn't there anymore, at least as far as we know. The "me" of my life is somewhere else. Interestingly the body that my consciousness was in and knew, that hurt, got tired, was in pain or had pleasure, is gone. So any sense of "me" having any experience with it in a post-death existence wouldn't seem possible. So - what's this post Me, and what's it doing if in fact it's doing anything at all...?
Good question. My impression is that the idea - idea only - of a purgatory, might be seen in the process of our lives after death and over a future time. Not in a punishment or pseudo hell way or any of that but - if we do in fact die and lose consciousness but have a future restoration of it, in "new" bodies, there will be a process of purification that occurs where by our pneuma hagion fueled consciousness will have shed all past references to these bodies and this new life consciousness will inhabit a new body.
I'll spare dragging out all the verses in Corinthians and Thessalonians, etc etc that we all probably know, but I derived that from what's in the Bible. It seems to be similar to the process Jesus Christ went through - lived, died, resurrected, lived, ascended to the right hand of God (whatever that really means) If we follow suit in this timeline we have from here, it will be a process of change that will ultimately produce the New Me, in a "3rd heaven and 3rd earth".
YMMV. Peace and plenty, to all.