I retired a month before my 57th birthday, and the only thing I would change is I should have stuck with my original plan to retire at 55. While I thoroughly enjoyed my many different assignments over the first 30 years of my career, the last few years were significantly less enjoyable. I've never gone back to visit, and never really thought about the place, since my last official day at work.
There is no simple answer to this question btw. I see articles posted on news sites all the time, offering up this or that reporters recommendations about retirement, and no matter what any of them try to tell people the only real answer is "it depends". People who spent their life living below their means and putting away as much as possible for a rainy day will likely be able to retire early without much worry. People who lived beyond their means their entire life may never be able to retire. People who have no outside interests or hobbies may have a very hard time adjusting to not going to work every day, while those who do have other interests and friends outside the workplace will likely do much better. And of course some people love what they do and can't imagine giving it up, while others are worn down and burned out and really need to get out for their own mental health.
All I can recommend to anyone is to look at your situation honestly, sit down with a good financial planner if you're not comfortable with that aspect of the decision on your own, and do what is best for you.
Jerry