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 An Inside Look at Retirement Living A number of questions and concerns need to be addressed to help you better prepare for retirement living. What Is My Life Expectancy? Estimate how many years you may need retirement assets or how long to provide income to a surviving spouse or children. Surprises Making the most of surprises is a great reason to work with us.