O God, from my youth you have taught me, and I still proclaim your wondrous deeds. So even to old age and gray hairs, O God, do not forsake me, until I proclaim your might to another generation, your power to all those to come. (Psalm 71:17-18 ESV)
You may be thinking, "I don't understand young people and their culture, AND they certainly don't understand me!" While this is partially true, you, the senior saints, have the great advantage of having walked with Jesus Christ 30, 40 or 50 years. You have experienced God's glory and power and faithfulness over your life time through victories, dark valleys and monotony. You have something that the young do not. So don't think about spiritual retirement. Make the most of every opportunity to impact the lives of those who will outlive you. Jesus Christ is worthy of this life long service and the kids need to know your great God.