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? Share | Related Content Should You Ever Retire? A growing number of Americans are pushing back the age at which they plan to retire. Or deciding not to retire at all. Caring for Aging Parents As our nation ages, many Americans are turning their attention to caring for aging parents. Investment Strategies for Retirement Investment tools and strategies that can enable you to pursue your retirement goals.