Deferred annuities are long-term investment vehicles that allow tax-deferred accumulation of savings and provide options for withdrawing funds in retirement. They offer benefits like tax-deferred growth, guaranteed lifetime income, and death benefits. However, they also carry fees and restrictions. Living benefits like guaranteed minimum accumulation, income, and withdrawal benefits provide protections but for additional costs. Investors must weigh benefits versus fees to determine if a deferred annuity is suitable for their retirement needs and risk tolerance.