Once the emotional high of retiring has worn off, and the honeymoon phase is over, many people feel a sense of disappointment and disillusionment. They have spent so much time looking forward to retirement, so once it sets in, it can feel less exciting than it was hyped up to be. And they may end up feeling like something is missing in their lives.
There can be downsides such as boredom, loneliness, and feeling useless. And if not addressed, it can be easy to slip into a depression during this stage.