Without God in your life you face death, eternal death, that's simply what the Bible teaches. You see God loves each one of us deeply, He does not want any of us to be lost.
In fact the Bible tells us that when God has to punish the wicked with eternal death, it is called His "strange act"...
Isaiah 28:21 "For the LORD shall rise up as in mount Perazim, he shall be wroth as in the valley of Gibeon, that he may do his work, his strange work; and bring to pass his act, his strange act."
Judgment is God's "strange work". He reserves it only for times when the state of men's souls is in critical condition. It is the rare thing that He allows when the world, or sometimes a people or city, has reached a point of no return into darkness, when it has sealed its fate, when it is close to being doomed, when it has become so proud that it cannot recognise its own sin, and when it has turned so far from God that people are beginning to believe that evil is good and good is evil. This is why God had to destroy the world once before, with a flood of water:
Genesis 6:5-7 "5 And God saw that the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually. 6 And it repented the Lord that he had made man on the earth, and it grieved him at his heart. 7 And the Lord said, I will destroy man whom I have created from the face of the earth; both man, and beast, and the creeping thing, and the fowls of the air; for it repenteth me that I have made them."
Genesis 6:17 "And, behold, I, even I, do bring a flood of waters upon the earth, to destroy all flesh, wherein is the breath of life, from under heaven; and every thing that is in the earth shall die."
Jesus tells us that this is exactly what the state of the world will be at the end of time when He returns:
Matthew 24:37-39 "37 But as the days of Noah were, so shall also the coming of the Son of man be. 38 For as in the days that were before the flood they were eating and drinking, marrying and giving in marriage, until the day that Noe entered into the ark, 39 And knew not until the flood came, and took them all away; so shall also the coming of the Son of man be."
This is why God will have to perform his "strange act" once more, for the final time. But this final time it will not be a flood of water that cleanses the earth, but instead the earth will be purified by fire.