There are many things that people want. Some things are small, like wanting that light at the next intersection to stay green until you’re through it. Some things are of greater importance, like a couple trying to have a baby for years. But all people have experienced that yearning, that hoping for something yet to come.
During the season of Advent, the Church experiences that same yearning, but for a much more consequential thing: the coming of the Messiah. We, as New Testament people, know that He has come already, that He has lived a perfect life, that He gave that life on the cross for the sins of the world, and that He rose again on Easter morning, triumphing over death, sin, and the devil. He offers that victory to us, as well.
But are we living in a perfect world? No. We wait, we yearn, for His second coming, when He will restore all things. There will be a new heaven and a new earth; every tear will be dried from our eyes, and there will be no pain or death.
And so we wait. Of course, we enjoy the blessings that God gives us and our time here on earth, but we never forget that we are an Advent people, looking for the coming (again) of our Lord.