Are target-date funds hurting Americans as they live longer?

As Americans enjoy longer lifespans, target-date funds, which were once considered safe default retirement investments, are coming under scrutiny for their ability to sustain retirements over many decades. These funds, designed to become more conservative as investors age, may need to adopt a more aggressive strategy earlier to meet long-term financial goals. This shift could lead to higher risks during the investor's peak earning years, prompting questions about their suitability as a one-size-fits-all retirement option. Understanding these implications is crucial for individuals planning for an extended retirement.