Lola124 - I adore the west country. I would love to live there myself! However my children live several hours drive from there. I know that if I became more frail, they would have a horrible journey there and back to visit me - or to help me, if I needed them. It would put a lot of extra strain on the lives of my hard-working children and grandchildren, trying to maintain physical contact with me.
I had two separate pairs of friends who moved to the west country when they were around 60. They very much enjoyed their lives there, until they were very old and frail. From the time they moved there, I know that their families (once the novelty of visiting such a pretty part of the country to see them wore off) resented that extra long journey they had in order to see the parents.
With both of these separate friends, there were enormous problems in their lives and in their children's lives, once they were widowed. Then later, more problems once they inevitably became quite frail - as they were so far from their adult children and grandchildren.
One of those widowed people had to move again to be nearer to one of her children. This son had insisted on it. But the widowed person knew no-one in her son's area, and had become too old and frail by then to get out and socialise anymore. Their son was always very busy, and while close by - was able to make the briefest of visits to the lone parent. As the old person was now a long way from old friends (like me) and new friends they had made in the west country - they became very isolated. (It's no fun getting old!!!)
Lola - It wouldn't be difficult to make friends once you decided to go to Devon. Provided you joined local social groups set up for the retired, and took an interest in the history of your new area, and learned your way all around it! You would then feel like a local!
A new lady (an active widow of 82) from another part of the country moved near me four years ago. She has arrived where I live to be nearer to her married daughter. She knew no-one else here. Her adult children are very busy people, so she joined several local groups. She is a kind, cheerful and friendly person, and has made many new friends since she has been here. We have all got to know her well, and have become very fond of her. So you are never too old to make new friends. If she became frail or housebound in the future - she has now made enough good friends in her new area to keep in touch with her and help her, plus she is also near her family.
Moving, and settling happily in a new area - is about putting yourselves out there with a cheerful and positive attitude, and showing your new neighbours that you very much appreciate them, and appreciate living in their lovely area. Then they will warm to you.
Good luck with whatever you decide to do.