What end is served by making ignorant people think that they know the truth? The answer is simple: to make the priest more powerful. I personally have no respect for anything that seeks to make priests more powerful. If you want to know why, read The Anti-Christ.
Why is a priest any different then a car salesman, a politician, a fruit vendor, a roofer? All sell you something and claim their product is best. If you don’t research then it is your fault if you get the shaft.