We were created for fellowship with God. God places a giant hole in our heart that only he can fill; Romans 1: 19 For the truth about God is known to them instinctively. God has put this knowledge in their hearts; and when we live our live as we see fit, ignoring our Creator, then we will spend the afterlife in the exact same fashion; eternally separated from God. On judgement day there will be no atheists, and we will all be judged for the act of acknowledging God through His Savior Jesus Christ, or for ignoring God. All He wants is our love, and if we love Him now, then we will get to love Him forever, but if we ignore Him now, then we will be separated from Him forever, and that separation is hell.