I'm slightly baffled by how defensive the responses are...but MN is a crazy place sometimes.
I grew up in Glasgow, lived in London in my 20s/early 30s, then Cambridge, now in a small town outside a much bigger town about 70 miles outside of London. It was important to me to still be able to access London but that's not as easy as it might seem sometimes - I work in London most of the week but at the weekends there are almost always engineering works on the train so it's drive or very very tedious rail replacement buses. If not for that we'd probably spend more of our weekends in London.
Where I live there's an excellent theatre, fantastic arts centre and a brilliant art gallery. Some nice restaurants, cafes and bars. Baby years were not here but in Cambridge which was good in terms of activities but not always easy. Looks like there are lots of good baby groups etc here so I sort of wish we'd been here then as I think I'd have made friends. It's friendly here, though, so have made friends anyway.
So, yes, there are some really good things to do. But not the variety of London and I DO miss that. We go to the art gallery every time there's a new exhibition, activity etc and it's great but I miss being able to go to lots of different galleries etc.
Public transport here is pretty good but it's SO expensive, and I don't drive. I can afford it now but if I'd been here when I was younger I'd have felt quite restricted by the cost, I think. It's reliable and fairly frequent though, so that's good.
Weekends tend to be: drama class for DD on a Saturday, chill out Saturday afternoon or maybe a movie, exhibition or something. Sunday we often go out for a walk by the sea or in the country, or just in our lovely little town.
It's just different. The values are a bit different - not always in a bad way, not at all. Just needs a bit of a shift in mindset sometimes.
We are really, really happy and so glad we moved here and have no intention of leaving. It is different and I do miss some aspects of London but that's mitigated by me being there quite a lot still.