This is entirely OT but CivGeneral you do need to look into the practices that gave the Catholic Church such wealth. They are immoral and sometimes downright hateful.
A few examples.
Confiscation of Jewish lands and properties and other religous "heretical" groups.
War chests from religous wars instigated by the church against so called anti christs.
Indulgences where rich people could buy forgiveness without obligation. Essentially you payed hundreds sometimes thousands( depends how much you had sinned) in "gold" thaller, Florins, whatever you want to call it, and were forgiven for all past indiscretions.
Nobles recieved many incentives to give over money, political favour and consideration was often a major part not just religous consideration.
Holding works of art confiscated from others during the second world war, by others I mean Jews, communists and other people considered apostate.
I could go on but I sugest you read your history before you make claims about the wealth of the Catholic faith, some of it was obtained by immoral acts.
Now I wont chastise a faith based solely on history, but it does beg the question, can the Catholic churches money be held up to such close scrutiny?
Religions need money to survive, quite how much is the subject of much historical debate.