The Autumn leaves were lovely while they lasted; now the branches are bare and the yard clear. We human beings are lovely while we last, but we too are soon gone. "Do not love overmuch the work of your own hands", the Valar warned the Elves. The Elves were undying; their works, clearly, were not. One after another their kingdoms and refuges fell to Morgoth. Even Lothlorien was finally abandoned as first Galadriel and then Celeborn wearied of Middle Earth and took the straight path over the sea back to Valinor.
This world is not our home; we're just a-passing through" says the old gospel hymn. That's not the whole truth, to be sure, but it is on the right track. Our true home is wherever Jesus is, which when he returns, will be this good earth, renewed by his love and power.
The command to us is the same as to the Elves, "Do not love overmuch the work of your own hands."
Jesus Christ, the same yesterday, today, and forever.
Even so, come, Lord Jesus.