The Power of Tax-Deferred Growth Why are 401(k) plans, annuities, and IRAs so popular? Share | Related Content Women and Retirement Women must be ready to spend, on average, more years in retirement than men. 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.