I started with a company right after I graduated from high school and then worked there for 37 years. Three years ago I retired the day after Christmas at 56 years old. The only reason I retired then was because if I did not I would have had to do another ten years. The financial crisis put a hurt on the pension plan and changes had to be made. My lovely wife is eight years younger and she actually has to work about 14 more years. When I did retire it was with the idea of getting a part time job and my former employer offered me a cushy position three days a week.
Four days off three days on works great for me, it's because of that I am riding my bike more than ever and I have time to pursue my life long hobby of photography. If you can do it then by all means go for it, you will not regret it