The trouble in our world today is that there are billions headed for a lost eternity because of their wrongdoing towards God (we call this sin) and they do not register the danger they face.
Tragically, they seem to be oblivious to the fact that they are sinners at all and cannot therefore grasp the concept, nor of their desperate need for salvation. It is a little bit like ignoring the neighbour who has told you that your house is on fire!
Their, 'I am as good as anybody else, probably better than most and certainly a better person than many Christians I've met' is totally irrelevant.
God's rule is that sin equates to that 'lost eternity'. That sin need not be a catastrophe. The price; the punishment for it has already been taken for us by God the Son, Jesus, dying on a cross for us. But we have to be repentant and give our lives to Jesus in order to access it.
Sadly, in our world today - you attempt to give folks the warning and they will not listen so there is a need to try to get the message across more subtlely than has ever been the need in the past.