This world is not a paradise.
There is war and there is terror. There is oppression and there is persecution. There is discrimination against people. There are many refugees in this world because of war and climate change. There is sickness and there is death. There is poverty and there are people without hope.
God will make everything new! A new heaven and a new earth!
The apostle John had the privilege given by God himself to see a glimpse of this new creation, which is at the same time:
a future for the those who live on this earth;
a reality for those who live with Christ Jesus!
1 Then I saw a new heaven and a new earth, for the first heaven and the first earth had passed away, and the sea was no more.