NC for this so I can post as much detail as possible then retreat to anonymity afterwards.
DH and I live in the south east on the coast. Not in a particularly posh area but not rough. We own an ex LA house which we have extended, modernised, decorated to our tastes. The house really works for us now, lovely garden, driveway, fantastic neighbours. 3 double bedrooms. We have one DC and trying for another. I work from home and my job involves having a local client base and good reputation. My husband works in the city centre and can get to and from work in 20 mins. He is home for DD bedtime most nights. There is a supermarket at the end of the road and the beach is 10 mins away. DD loves her nursery. Basically every box is ticked with this house and we would be crazy to move.
We really love our house, but I grew up in a market town in the countryside, and can't quite accept the fact that I'm now living in a city. I always imagined my kids would grow up in a village or small town, not a city. It's not like we are even that affected by noise or traffic but I have this urge to live somewhere where I can look out over green space and not the ugly houses that surround us.
Would we be crazy to move out of town? Our budget for a new place would be less than 500k which doesn't get much close to our city. I doubt we could get a house we love as much as our current home, and we put major blood sweat and tears into making it work for us. I am generally happy here most of the time but occasionally go away for the weekend and come back feeling really depressed that we live in the city and not in a village. Am I mad? To consider giving up everything we have here? The main factor is DH's commute, which would probably end up at 45 mins-an hour depending where we moved, obviously the places with direct train links to the city offer less for your money.