I didn't have a choice. My company needed to halve its number of staff and some 35,000 people had to go. The terms were very generous and if you were over 50, if it was a no-brainer, instant pension without cutbacks and a big lump sum plus bells and whistles. I didn't want to leave but it was in my best interest to do so, For me retirement started at 53, whether I liked it or not.
I took a year off to go back to university, courtesy of the retraining grant that was part of the redundancy package and then I tried to get back to work. The rejections came back by return of post - a well qualified woman wanting to to be considered for a a job at 54? you must be joking.
So, I embraced retirement. I took my skills to a charity as volunteer and became a Benefits Advisor, I developed all my hobbies, we moved house and I made new friends.
Retirement is what you make it. If you sit at home bemoaning all you miss from work, it will be miserable and lonely. Develop your interests, go out and meet new people through hobbies, classes, volunteer work or just getting to know people in your community now you have time and it can be a great time, far better than work.