<human>: (I'll probably say things that aren't right. It's just easier to present them as my opinion than to end every statement with "At least, that's the general idea I've accumulated over the years.")

I've heard a fair bit about the Catholic Church being one of (if not the) wealthiest organisations in the world. Now, I know they've got a state to run, and I know they get up to a fair bit of charitable work, but there's still a *lot* of money just sort of...sitting around, right?

Now, my thought about it has always been that if they put all that wealth towards causes that benefit humanity on a larger scale (like important medical research, enviromentally-friendly fuel sources, etc.), they could make the world a noticably better place within a few years. But looking at it, that seems too...simple. I'm uninformed, and there's gotta be personal bias coming into play somewhere too.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: How much money does the Catholic Church have just sitting around, what do they do with it, and if they don't do anything with it, why not?