The annuity has unique characteristics to distribute income till the death or its survival. It is better to use the fund one the person gets retired and use the fund for their survival. In present majority of the people purchase annuity for the investment purpose to get the fund at certain period of time. It means annuity has defined in two faces one is for security purpose whiles another is for the investment purpose.
There are several benefits of the annuity funds. You do not want to pay income tax because funds get compiled till not taken back. Once you withdraw funds you need to pay less tax. Incase of death of annuity owner, the benefit will transfer to the beneficiaries. On selection of the monthly option the life insurance company gives payment on monthly basis.