Immediate annuities are most suitable for individuals who are looking for a guaranteed income stream during their retirement years. These individuals typically have a significant portion of their retirement savings and are looking for a way to convert those savings into a steady income. They may also be concerned about outliving their savings or want to ensure they have a reliable source of income regardless of market conditions. Ideal candidates for immediate annuities are those who are risk-averse and want to secure their financial future during retirement. However, it's essential to consult with a financial advisor to determine if an immediate annuity is the right choice for your specific situation.