I am SO sorry to hear that you don't believe Heaven is real. This means you also don't believe in Hell. Jesus created both of them. Heaven is for Christians, and Hell is for those who have NOT asked for God's forgiveness and become a Christian. If you still don't believe this when you pass away, then you WILL believe it when you stand before the Great White Throne, and see God. Unfortunately, it will be TOO late to change your heart, and you will have to pay for your life of sins.