I agree brother, the flesh body goes to the grave, whether or not the body was of a born again person or not.
You say the breath of life goes to God, which is the breath of God which God put in man, when a person is born again the Spirit dwells in Him, it is Holy, it would return to God, therefore a born again person has a saved soul, that must also go back to God as these two are immortal, the flesh is mortal from the dust of the earth and to the dust it returns. Please confirm you view regarding the soul.
The none believer, none born again spirit and soul goes I think to a special place awaiting judgement.
That is why I am constantly saying brother, we need to go back to the early church, from Pentecost for first few hundred years, the period before Constantine and the RCC were involved, from then there have been to many changes and as you say, before the printing press, before reading and writing and understanding everyone believed everything the RCC taught. Sad and very dangerous. The church today takes so much for granted in what it does and believes.
The reformation is exactly as you describe it, the reformers were catholic. Some things were corrected, made clear, although the RCC followed the path it had laid over the hundreds of years.
Many Protestants still wanted to follow the RCC, many still do to this day. Many protestant churches say the creed every Sunday, I believe...…. then say, I believe in the Holy Catholic and Apostolic church.... They are tied to it, they profess their faith through it.
There are so many wrongs today, it is our salvation, it is up to each person to find out THE TRUTH, and the only way to do that is go back to Acts, study the Word and the early church. The differences stand out like blotches on a white garment.
Shalom