In a very general sense, annuities are most often used by individuals who are approaching retirement or in retirement.  Annuities can be very useful for people who need to create secure income in retirement and for hedging longevity risk.

However, certain types of annuities--particularly variable annuities--can be useful for younger people.

There is an entire forum topic dedicated to "annuities for younger people."  That section should be helpfulb to you and it can be found by clicking here.

Please feel free to ask further FAQ questions or move additional questions and comments to the forum thread referenced above.