Assuming I manage to relocate to France and still have a vote in any future referendum or whatever, I may have to take into account the favourability of the exchange rate - the UK accepting the euro vs the country continuing to go down the plughole and taking my pensions with it ...
As to the other thing, I liked the EU because of its moderating effects on neoliberalism and its going after tax havens and money laundering etc ...
After some very unpleasant forces took us out, I have had to accept that I care more about stable economies than the Tories - those who aren't actually self-serving crooks, appear to be morons.
Mostly it makes more sense than 27 small nations trying to deal with superpowers individually.
EDIT:-
As it happens, the UK govt has been forced to reinstate the reciprocal post-66 healthcare arrangements with both France and Spain ...
So the main difference in terms of emigrating to France as a non-EU citizen is that the UK state pension would no longer be sufficient funds so it's only fortunate people like me with a decent company pension who can now move to France - who require minimum wage ("SMIC") levels of income.
I never understood how people actually managed to live in France on £500 a month, but that was apparently the EU threshold for a single person - or 800 for a couple...