I can’t see that a quiet (retirement) lifestyle française would be significantly different from the same thing in England/Wales/Scotland)/Northern Ireland. Why should it be?
We live basically the same way as we did in Essex before we moved to Normandy, with the possible exception in my case that I am less actively engaged in charity work here, partly because of cultural differences, and to some extent language.
We eat more simply, but our disposable income is less because our utility bills are higher here, and we have to run a car, whereas in UK public transport was easier to access. We also have to pay more tax, and for a top-up mutuelle to cover our hospital admission tariffs. Chicken food and bedding costs 35 € a month, but we do get free eggs.
The main benefit for us is the proximity of sympathetic and friendly neighbours, and more cost-free or low-cost high-quality cultural resources within a reasonable distance.
We have no real scope for saving from our income, and we have a second home in UK that we have to keep up, for our childrens’ sake.
We live on our English OAP pensions and professional pensions on top. We are comfortable, but there’s no scope for complacency.
I recently copped a garage bill for 1 700 € for which I had to get a loan I’m paying off in four monthly instalments until 2020.
The result is turning off the heating and wearing a dressing gown over my outer clothes, a scarf,and a woolly Moroccan hat with a tassel. Indoors.
But we appreciate the peace and quiet, the slow pace, which costs nothing, and is rare in SE England, even outside the main built up areas.