Firstly, when God saw all he had made it was good. The bible does use both the words 'good' and 'perfect' illustrating that there is an obvious God known difference between the two. One thing that makes me so excited about the afterlife is that; the earth was made through the word of God. If the word of God can create such scene, beautiful sunsets, beaches, seas, fields and flowers - imagine what the garden of eden that was planted by Him would look life. Since He cultivated the garden of eden, he looked after it, planted the trees with his own hands, drew the skies himself and coloured it in did everything by hand and not by words, the beauty would be unmatched. Furthermore, Earth was a place of punishment for Adam and Eve and the sin they committed - it is completely different to the Garden of Eden which he made for them, so you can only imagine what heaven would be like that he designed for himself. Also you may believe that earth is perfect, but in heaven there will be no suffering, no pain, no tears, only joy and happiness.