As a responsible adult and a creation of God, we are under obligation (as a child is under obligation) to determine what our purpose is, what our sense of obligation is, what our obligation to others is, and what the outcome is if we choose to ignore those obligations.
Just as a child is taught by parents, school teachers, peers, etc., we may receive instruction and insight beyond the pages of the Bible. Sometimes this may be in the form of our own experiences in life.
But we should never ignore instruction because it brings obligations and responsibilities.
If, in the secular world, a young person does not use his instruction for a useful purpose, that is supporting himself, etc., what is our attitude toward such an individual? Do we have praise for them? Do we entrust them to make decisions for us?
And if that person should incur the wrath of the law for negligence of responsibility or duty, do we feel that has been unjust?
"Ignorance of the law is no excuse".
The same goes for our knowledge of our relationship to our Creator.
One of Jehovah's Witnesses who feels a strong obligation toward the Creator, Jehovah, and a strong love of mankind.