We now declare and expressly enjoin that all without exception are bound by an obligation of conscience to submit to the decisions of the Pontifical Biblical Commission, whether already issued or to be issued hereafter, exactly as to the decrees of the Sacred Congregations which are no matters of doctrine and approved by the Pope; nor can anyone who by word or writing attacks the said decrees avoid the note both of disobedience and rashness or be therefore without grave fault.Praestantia Scripturae, Pope St.Pius X [http://catholicfaithdefenders.com/genesis-myth-or-historical.html]
To be a Catholic it would seem that there is no choice but to agree without discussion or questioning.
That document and others like it are expressing what it means to be Catholic. It establishes a criteria against which we compare ourselves. If we accept and meet the criteria we are Catholic. We are free to be anything we choose, many choose to be Catholic some reject it.
Rather than sift through the dumpsters to see what out of context snippets can be found to support your assertions that Catholics are mind numb robots called to blindly obey Rome, look to the Catechism to see what the Church teaches about free will"
CCC1704 - The human person participates in the light and power of the divine Spirit. By his reason, he is capable of understanding the order of things established by the Creator. By free will, he is capable of directing himself toward his true good. He finds his perfection "in seeking and loving what is true and good."
CCC1711 - Endowed with a spiritual soul, with intellect and with free will, the human person is from his very conception ordered to God and destined for eternal beatitude. He pursues his perfection in "seeking and loving what is true and good"
CCC1730 - God created man a rational being, conferring on him the dignity of a person who can initiate and control his own actions. "God willed that man should be 'left in the hand of his own counsel,' so that he might of his own accord seek his Creator and freely attain his full and blessed perfection by cleaving to him." Man is rational and therefore like God; he is created with free will and is master over his acts.
CCC1731 - Freedom is the power, rooted in reason and will, to act or not to act, to do this or that, and so to perform deliberate actions on one's own responsibility. By free will one shapes one's own life. Human freedom is a force for growth and maturity in truth and goodness; it attains its perfection when directed toward God, our beatitude.
CCC1853 - Sins can be distinguished according to their objects, as can every human act; or according to the virtues they oppose, by excess or defect; or according to the commandments they violate. They can also be classed according to whether they concern God, neighbor, or oneself; they can be divided into spiritual and carnal sins, or again as sins in thought, word, deed, or omission. The root of sin is in the heart of man, in his free will, according to the teaching of the Lord: "For out of the heart come evil thoughts, murder, adultery, fornication, theft, false witness, slander. These are what defile a man." But in the heart also resides charity, the source of the good and pure works, which sin wounds.
CCC1993 - Justification establishes cooperation between God's grace and man's freedom. On man's part it is expressed by the assent of faith to the Word of God, which invites him to conversion, and in the cooperation of charity with the prompting of the Holy Spirit who precedes and preserves his assent: When God touches man's heart through the illumination of the Holy Spirit, man himself is not inactive while receiving that inspiration, since he could reject it; and yet, without God's grace, he cannot by his own free will move himself toward justice in God's sight.
"The Christian faithful, conscious of their own responsibility, ARE BOUND BY CHRISTIAN OBEDIENCE to follow what the sacred pastors, as representatives of Christ, DECLARE as teachers of the faith or DETERMINE as leaders of the Church." - James A. Coriden, Thomas J. Green, Donald E. Heintschel, eds., The Code of Canon Law (Paulist Press, 1985), Canon 212, Section 1.