Life on this earth as we know it is like a vapor Here today gone tomorrow. We were created by God for his pleasure. What we do in this life determines where we will spend the next life. If we obey God it will be with Him for eternity. If we rebel it will be with the devil for eternity..
We live to serve God. Notice what is written in Micah 6:8: "He has told you, O earthling man, what is good. And what is Jehovah asking back from you but to exercise justice and to love kindness and to be modest in walking with your God?" By following the advice found in this verse we will fulfill God's wish found in Proverbs 27:11: "Be wise, my son, and make my heart rejoice, that I may make a reply to him that is taunting me." Who is taunting God, and how? Satan, as he claims that humans only serve God out of convenience, not truthfully (Job 1:8,9).
We were originally made to live eternally. That is why God gave Adam and Eve the purpose to “be fruitful and become many and fill the earth and subdue it” (Genesis 1:28). However, when they disobeyed God they lost their everlasting life and ours, as well.
Everything that God promises he fulfills, and his purpose or Earth and humans has not changed. Therefore, after death we hope for resurrection into a paradisaical Earth where there will no longer be illness, sadness, badness, nor death (Revelation 21:4; Psalm 37:10,11; John 5:28,29; Isaiah 33:24)