18 Years’ Worth of Days The average retirement lasts for 18 years, with many lasting even longer. Will you fill your post-retirement days with purpose? Related Content Yours, Mine, and Ours: Estate Strategies for Second Marriage Second marriages are a trigger event to revisit any existing estate strategies. Emotional vs. Strategic Decisions Information vs. instinct. Are your choices based on evidence of emotion? Stop Wasting Money One way to find money is to examine your current spending habits and eliminate money wasters.