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. Healthcare Costs in Retirement Without a solid approach, health care expenses may add up quickly and potentially alter your spending. An Inside Look at Retirement Living A number of questions and concerns need to be addressed to help you better prepare for retirement living.