Depends on what sort of fishing you want and just how near the sea you want, well she who must be obeyed wants...hehehe
My wife also got the idea of moving to the South coast so for the past three years and as often as we could we trotted down to the area between Bognor Regis and Rye, she was as happy as a cat with a mouse, then came the a warm May and summer and tourists. We had been taking long weekends and the odd week in bed and breakfast places, hotels and rented accommodation.
My wife went off the idea of actually living (a); on the sea front. (b); in a seaside town. Partly because of the crowds of tourists and lack of parking, in Autumn and Spring they are pretty good places to be in, so long as you accept that our seaside towns have been left to rot and fester for the past 30 years and like everywhere else small and to some interesting shops are just empty and closed retail premises. The majority of houses we looked at were in a generally very neglected state in so far as maintenance goes (we have looked at over 100 properties). Then one has to consider just what salt laden air and winter storms do to motor vehicles, not the most auspicious of environments for metal.
Somewhere along the way came her idea of living near a harbour or marina so she could see things moving and have some interest, the same problem applied to the condition of the properties with the added burden of much higher asking prices and even more problems in the parking and shopping areas.
Please don't get me wrong she still fancies living near the sea but has now decided that for her ideal we simply rent a place for a holiday every Autumn and Spring and/or go away for long weekends.
Then surprise surprise she asked me where did I want to grow old, I don't want to grow old - growing old sucks and its a bitter taste ache's and stiffness is she nuts? ... hehehe Seriously I think it is important once you are over 50 to consider many things here is my little list which I gave her earlier this year. Please remember the list is from my point of view.
1; how would one of a couple manage if the other died earlier than expected?
2; how would older people cope with a hilly area if they had not been used to it for many years?
3; how easy is shopping?
4; how close is a hospital?
5; assuming a very together couple what is there to be involved with jointly spring, summer, autumn and winter?
6; what is the crime rate like?
7; what is the standard and availability of local builders and decorators? Bearing in mind that as you get older you feel a lot less like getting up a ladder to do household maintenance.
8; does the area get unpleasantly crowded in summer?
9; do you need or want to be near younger relatives? Who may move away at any time.
10; what are the locals like, are they a close nit community or a more open community?
simple little list and nowhere did I mention my hobbies on it, which are fishing, miniature tabletop war gaming (scale model toy soldiers), model railways, model engineering, making bits and pieces. These being the only hobbies I am likely to continue through old age although stamp collecting might be another area, as they are generally less demanding on physical fitness than some of my other hobbies.
One has to consider what one really wants and has a real interest in and when looking one must not forget how one will live in any new area one is considering moving to not just immediately but in 10 or 20 years time, try to guess or gauge how the area will be in 10 or 20 years, do you have to consider sons and daughters and or their children visiting.
Nobody can consider or allow for every eventuality but I feel it is important to consider as many areas as possible.
For me its like living in Suffolk we are about 1 hour and 20 minutes by car and train from London, and about 40 minutes from the coast. I don't really like Suffolk although I do appreciate the countryside, I am a townie by birth and nature. Missing it I have tried to fill as many gaps as possible in order to keep my wife happy and yet not to feel deprived. Like many marriages its all about give and take, I give and she takes ... hehehe Seriously for me its all about sharing and compromise which is probably why we have been together for nearly 40 years, my wife is my best friend and we enjoy each others company and sharing things and interests and going out together.
Moving to a new area is like getting married if 2 people are going there then it must fill the needs and desires of both.
Fishing wise locally I have the Suffolk Stour, the rivers Gipping and colne many good lakes and reservoirs just a few miles away there are more rivers, but we are not in what anyone could call chalk stream waters or good barbel rivers or salmon rivers, so it must depend on what type of fishing you want and what species. While at the same time considering your other half. If you are a sea and river fisherman and your wife wants to live near the sea then the answer is simple you live near the sea.
otherwise it would be a brilliant place to live 
