Earlier quoted context omitted.
If you step back for a second, you are claiming that billions of people are insane. Taking a singular, highly-specific (in the context of humanity and for the thousands of years that Catholicism has existed) issue and conflating it to insanity or sanity is, perhaps, insane in of itself.
Single individuals are usually sane. But when they form a superstitious groups they those groups believe and do insane things no single individual would.
Also the vast majority of the world believes in superstitious things so again the argument seems to be "everyone's insane except for me"