For the record, my professor was a convert to Catholicism who was brought to the Church through an intense study of Scripture. He, like I, also has Jesus.
I know of no Catholic who is or should be ashamed of the Catechism, but I know of a lot of non-Catholics who are afraid of the truth it contains.
Please be aware that when you besmirch "catholics" you are making a personal insult against many, many people who likely love God probably with greater earnestness than you do. I am hard pressed to see how the love of God who is the embodiment of love is judged by a human to be ill placed and unworthy. I am a Catholic who loves God and believes that Jesus is the Christ, yet you claim to know what is in my mind and my heart and deny that without having ever met me.
"Every one who believes that Jesus is the Christ is a child of God, and every one who loves the parent loves the child. By this we know that we love the children of God, when we love God and obey his commandments. For this is the love of God, that we keep his commandments. And his commandments are not burdensome. 1 John 5:1-3
"Why do you pass judgment on your brother? Or you, why do you despise your brother? For we shall all stand before the judgment seat of God." - Romans 14:10
I invite you to join me in the light of His love. Peace.
My brothers and sisters are 'in Christ' they are those who are born again and believe God's Word is The Final Authority.