Possible Clues:

• "Ripe" time of one's life
• Dotage
• Hundreds initially fleeing icy enclosure in autumn, so to speak
• Period of life associated with wisdom
• Later time of life
• It 'isn't so bad when you consider the alternative,' per Maurice Chevalier
• Geriatrics focus
• Prime years for rocking?
• 'Ripe' period
• Geriatrics concern