Autopsies are supposed to provide scientific data. In this age of scientism, where science is so very important, which is a better course: no data and lots of rumors, or data and therefore answers?
I read somewhere that it is common practice for popes to not be embalmed and for them to have an autopsy. I don't know where it was, but perhaps it was an error. Do you know if embalming is traditional for a pope's body? I can't find any info on the Net about it.
John XXIII was splendidly embalmed, as can be noted by the condition of his body currently on display in a glass case in St. Peter's. Paul VI was horridly embalmed. JPI was embalmed; JPII wasn't.
Pius XII was "embalmed" by his quack doctor (who likely caused his death) who actually only rubbed some oil over his body and dusted his face with powder.
Pius XII lay in state for eight days in humid October weather. Swiss Guards had to take fifteen minute turns due to the odor and several cardinals were overcome with nausea when praying next to the bier.
When his body was transferred to the wooden casket for the Mass, his nose literally detached from his face, due to rapid decomposition.