Before we were born into this world do you remember anything? Happiness, sadness etc.
We were with God then
God created the World out of love for us to have a way to enjoy what he has created himself & Jesus Christ God in the flesh, Gods son paid for all of our sins to seal the fate. In return all he asks is that we led godly lives and honor all he has done & created. He even gave us the Holy Spirit as a tool and it is very powerful. In retrospect our lives on Earth are very short in time but this isnt the ending God had planned for us. If we do as he asks & stay true to his Word then we enjoy everlasting life in Heaven.