Social Security: By the Numbers Here are five facts about Social Security that might surprise you. Share | Related Content 18 Years Worth of Days The average retirement lasts for 18 years. Are you prepared to fill that many days? Traditional vs. Roth IRA One or the other? Perhaps both traditional and Roth IRAs can play a part in your retirement plans. Retirement Plan Distributions There are a number of ways to withdraw money from a qualified retirement plan.