I'll try to answer all the questions as succinctly as possible.
In 4 years time my 2 eldest children should be finished uni. My now 14 year old will hopefully have just finished A Levels (18 yrs old). Who knows where they will be but I don't really want to leave just as my middle child had finished A Levels.
It's highly unlikely they would visit us in my wife's hometown much at all so I would see them much less. Although you could argue they may be away in another place and may happen in n any case.
I did not get my wife to move up north to care for my elder kids. She is a great stepmother but I was doing fine as a single parent before she moved in. I have my kids 50/50 because they're my kids! Not to avoid paying support to my ex wife.
My wife has not lived in her hometown for 20 years. She was at uni at another northern city then in London for a decade. All her uni city friends (& sister) moved to London at the same time and she did and she made many more. She loved / loves London. I could not move there as I had three small children. I did not trick / ask her to move up north. It was purely her own decision. Which I am very happy about and grateful for.
She does miss her London life and hasn't made the same sort of friends she made at uni and in London. She has WFH since moving to my hometown. She has made some friends through our kids but it's not the same.
She has a job which she can do from anywhere in the world. I can't do that. And realistically I would have to commute to a city if I were to work in the same profession.
A city like Bristol seems like an option but is 2/3 hours away from her family in Devon so not really worthwhile. We have discussed moving to cities in Oz / USA as this would be (a) great for her career (b) they are cities (!) and (c) my elder kids would be more likely to visit / even live with us in Sydney or NYC than a Devon market town. That last one may seem crazy but it's true.
Ironically most of the friends my wife made at uni, who moved to London, have now moved out of London as they start having kids. But back to the northern uni city where they came from. I did suggest that city as a potential location but it has not seriously been considered. I have also suggested London as my wife still has a property there. Again not seriously considered.
Since we've got together we generally spend a week down in Devon with my MIL three times a year. Sometimes more. MIL comes up to visit us also. MIL does not have a partner and has, we all reckon, primarily untreated mental health issues. Probably depression, ADHD and more. She is also emotionally manipulative. She likes to provide unwanted advice on how to bring up her grandchildren. For example she has threatened to call the 'social services' on both my wife and her sister as she didn't think her grandchildren were being raised in the right way!
Our lives would not be better with my MIL in them more regularly. My wife knows this to be true as she has admitted this. It was particularly bad over Xmas when my MIL stayed with us. She accused my wife (her daughter) of being an alcoholic on Xmas Day. After this I said that i wanted to see my MIL less this year and that I wouldn't be visiting her in Devon with our kids like we have in previous years. My wife is really pissed off at me for saying this. She finds her mother as annoying as I do, and can say this, but she loves her as she is her mother. Whereas I don't love her at all and just find her annoying.
I think this what is really driving this. She does want to be nearer to her sister, and perhaps mother, rather than move back to her hometown. She has 1 close friend still living near ish to her hometown but that's it. Moving there would mean uprooting our kids from their lives here. Education options would be more limited. Activities more limited. And as much as I appreciate 2 (award winning) market days a week that's not enough to keep me stimulated.
It feels like my wife is testing me, and our relationship, because I said I need a break from my MIL. Moving to her hometown has only been seriously suggested since I said this.
For context we both work full time. Have a 6 yr old and a 1 year. Our 1 year old doesn't sleep much so life is hard work right now. It feels like we're both at full tilt from the minute we wake up until we go to (broken) sleep. I am sure this stress is playing into the discussions we have about moving in the future.
We are aiming to start couples counselling soon to address these issues. I do not want to separate / divorce my wife over this so perhaps ultimately may move to her hometown under duress. And, you know, really appreciate those 2 market days a week. Although if I didn't move, and she wanted to split up over this, I would obviously not accept her moving to the other end of the country with our children so we're kind of stuck with each other for the next 17 years anyway.
BTW - I did not just walk into a room one day and state ' I shall never move to your hometown'. It was part of an ongoing conversation about what might happen in the future. I am not a twat.