"Scripture is filled with examples of men and women whom God used late in life, often with great impact - men and women who refused to use old age as an excuse to ignore what God wanted them to do." Billy Graham
God never decides we're too old for meaningful work. We may retire from a career, but we never retire from Christianity.
Old Testament figures often distinguished themselves in their old age: Moses (Exodus 7:7), Joshua and Caleb (Joshua 14:6-11; 23-24), and Daniel (Daniel 5:13-29) did important work in their eighties.
This is good news whether you're a teenager or a senior. At every age and every stage of life God has meaningful purposes for our lives.
"For we are God’s workmanship, created in Christ Jesus to do good works, which God prepared in advance for us to do." Ephesians 2:10
At every stage of life, we have new things to learn and new opportunities to leave our mark on this world.
I don't know about you, but I find that exciting!