So, considering I was baptized and confirmed a Catholic at age 13, but have since stopped identifying as a Christian and Catholic, yet still believe in Judeo-Christian values; if I don’t accept Christianity as my life and Jesus Christ as my savior, I’m doomed to an eternity in the fires of hell?
yes, you are doomed. I hate to call judgement on anything between you and God, but that's what God says. Note that you may yet change back to God and accept Him, then you will not be doomed. But otherwise, I'm sorry. You aren't doomed until you take your last breath...
Paul said:” If there be no resurrection of the dead, then let us eat, drink, and be merry for tomorrow we die”. Why cling to Judeo Christian values if you don’t believe in the spiritual engine that produced them...mainly the death and resurrection of Jesus Christ, in response to the love that God has for the world?
Perhaps it’s not you that clings, but rather Christ who is clinging to you that you would not be so truly lost in rudderless despair! Seek a quiet place for a time, by yourself and ask these questions into the darkness from...if you are truly and humbly seeking an answer, the answer will present itself.
Yet, the short answer to your question, is yes you are eternally separated from God if you reject Jesus Christ as Saviour as the apostles have preached. You have already discovered that Catholic rituals by themselves gave you no assurance of salvation as you were not as yet acqainted with their intended object...which is to say the person of Jesus Christ! Now I am not blasting Catholicism or any other “isms” of the Christian faith, just pointing out that active rituals don’t of themselves give life.