if lack of belief does not by itself doom one to Hell, why not just discard the unverifiable supernatural baggage and instead devote one's life to being the best human being possible?
In the end, God who is the judge will determine whether a person is worthy of heaven or hell based on the deeds he has done while he was still on earth. Paul wrote in Romans "those who do not know the law, shall not be judged by the law." Jesus made it very clear, that we have to love God with all our heart mind and body (this implies belief . The second is that we love our neighbor as we love ourselves. Lack of belief in and of itself, does not guarantee Hell (some people are invincibly ignorant) , and the judgement depends on the individual, but we are still individually judged. However, Nvrgnbk, when you die, you will believe. If we go to heaven to be united with God it is because we freely choose to love him. To die in mortal sin without repenting and accepting God's merciful love means remaining separated from him for ever by our own free choice. This state of definitive self-exclusion from communion with God and the blessed is called "hell."
People of other religions who have not been introduced to Christianity and Christ, that is, they who have not been given proper reasons for believing in the Gospels or perhaps never heard about anything at all are ignorant of the true message. But as Paul in Romans states clearly, all men have a conscience and will be judged by the law written on their hearts. For it is not knowing the law that God desires most, as written in Romans, but obeying the law. All other religions have moral laws to adhere to, however wrong some of those may be in one way or another, those people seek to please the God they know, and therefore if they knew the truth we'd figure out that they would be faithful in whatever faith they are brought to believe in.
As a Christian I not obliged to sit back and let you revel in this ignorance. Quite the opposite. But know that whatever and wherever we don't succeed, God will take care of matters according to the ignorance clause found in Romans, only He will truly know how validated that person is and what their destination will be.
It is even conceivable that God has purposely withheld evidence and allowed the claims of religions to become exaggerated and go unsubstantiated because he does not want us to believe in him. (Something for a liberal theist to think about: Could God be a spiritual "parent" whose desire is that humanity grow to the point where it no longer needs him?)
Now that is an interesting speculation.