"If you’ve got the luxury of, as you say ‘not deciding either way’ then surely that means you’ve got the time to consult Catechism and priest and GET a definite answer. You’ve no excuse not to educate yourself when you can. "
Not deciding is still deciding -to decide not to decide is a decision. So in every case, one (as you stated) MUST decide. There’s no luxury involved.
One decides to follow the teachings of the Church.
“I believe what the Catholic Church teaches and reject what is rejected”
That is the decision.
Content can be investigated later…
Act of Faith
O my God, I firmly believe
that you are one God in three divine Persons,
Father, Son, and Holy Spirit.
I believe that your divine Son became man
and died for our sins and that he will come
to judge the living and the dead.
I believe these and all the truths
which the Holy Catholic Church teaches
because you have revealed them
who are eternal truth and wisdom,
who can neither deceive nor be deceived.
In this faith I intend to live and die.
Amen.
From the Compendium of the Catechism issued by Pope Benedict XVI
vatican.va/archive/compendium_ccc/documents/archive_2005_compendium-ccc_en.html#A)%20COMMON%20PRAYERS%20COMMON%20PRAYERS)