I agree with both cameraman and phone, it can be fantastic, but would advise a degree of caution.
I would talk it over with your wife, check your finances, and how much early retirement would impact your final pension. I don't think you drive, so check where you can get to a water either on foot, public transport, or have a fishing friend you could travel with. I didn't have transport, having had the use of a company vehicle for so long. I bought a car to enable me to go fishing, and carry my grandson, (who was born a month after my retirement), to the many hospital visits he needed in his first couple of years. Without my grandson, or the car, I think I would have stagnated at home, but they got me moving, and gave me something to focus on. My wife is one of the 'waspies' that got stung over her retirement age, and is still working. I run her to work and back each day, but she has the option to retire this year, and is undecided whether to go part time, or retire completely. It's partially the money, but unlike me, she loves her work, and the social life with her workmates. That's another thing that I would consider, whether you would prefer to take a small part time job, to ease you into retirement, it's worked for a few people I know. We are all different, and have different needs, and lifestyles. I, for instance, have always been a bit of a loner, with just a few people that I would call friends, and I was mostly fine with my own company. Over the years, I have lost contact with many people, especially angling friends who chose a different 'commercial' path to me. I now find that I sometimes miss having them around, it's probably an age thing.
I might sound all 'doom and gloom', but I've known many people over the years, who have longed for retirement, but found that the idea, and the reality, don't always match. They have found themselves 'lost', and have fallen into depression. Some have eventually found something to focus on, be it part time work, a hobby, and in the case of a widower neighbour, a new lady friend. Other have not been so lucky, and have deteriorated both physically, and mentally, into a 'different' person.
I hope it doesn't sound like a 'trying to teach my grandma to suck eggs' thing, I genuinely believe it's not always an easy thing to adapt to.
Whatever you decide Martin, I hope it works out well for you, and your missus.
John.