God had the notion that His Word was perfect for us. The Catholics (and other denominations including some protestant) believe that God came short and had to add a whole list of their own “laws”. Trouble with that is all the laws including the Ten Commandments were nailed to the cross as well as our sins. It is pretty egotistical to think that one could add a law after God already took care of the “law” problem. (that no one but Jesus Christ ever lived without breaking one of them)
Right again...furthermore it is Christ who lives His life thru us...we are no longer our own. Either He paid the sin price entire or He did not. Christ's last words..”It is finished”...He did and that settles all arguments to the contrary. Additionally the Bible as we have it is very clear on what we need to know and He intended we should have.
I have found it interesting in cult studies etc. that one of the common ideas from those who have entered and came out of them is the individuals, who were Christians and fell for the lies, wanted “more” than that which Christ and scripture offered. They wanted signs and experiences of a supernatural kind because our society today values this far more than “faith” and “belief”.