I am retired and glad I knew when to step down and let younger men take the lead. That's why we invented "pastor emeritus" positions.
Retirement does not mean quitting. New doors of opportunity opens without the obligations of leading a church. After my strokes and semi-recovery, I ministered to people flat on their backs in hospital or home from strokes. They knew I understood them because I was also a victim.
I may have difficulty climbing up to a pulpit, but a bedside is on my level. Reading scripture and praying with folks, some even younger than me, in nursing homes is a wide open ministry.
We retyre a motorcar to go another thousand kms. We retire from church ministry to go another distance in ministry.
Cheers, and happy retirement!
Jim