I appreciate your response to my response :-)
I agree to a certain extent, although I probably don't quite see proximity to family as massively different from proximity to friends. I personally think kids being brought up in "generally loving and supportive" environments in which which they get to hang out with all sorts of groups is actually what's important.
So kids (of course) having other kids to be with - but also being involved in the back and forth of adulthood as well. Kids being at the table when adults are discussing things over dinner, being party to (some) of the trials and tribulations of adulthood, knowing that parents are fallible but supportive - and yes, into this mix comes family too.
What I'd personally describe as the "problem of contemporary parenthood" - as you describe it - is a bit closer to home. I'd say it is families where the parents simply don't have time to spend with their kids - either because they're primarily focused on The Big Career or have been forced by low incomes to work several jobs / work all the time. I see many, many people chasing money for the sake of some future satisfaction / security - and then they look around and their kids have been and gone. Those 18 years go like a flash (as my mother in law says: "when you have kids, the days are long but the years are short"), and our personal intention has always been (to a certain extent!): "screw the future, we're here and now with our kids, let's make the most of that time!". So we could have grown our business, could have taken on staff, could have had big premises, could have gone for bigger and bigger web builds - but we have deliberately chosen not to. Downside: we'll probably never be able to retire! - but I've had the absolute luxury and privilege of seeing my kids grow up, and being there all the way through that journey. There's a parallel world where I am now (at 50) selling my business ready for retirement - but it's a world in which I wouldn't have been present for my family. Would I swap these worlds? Never, not in a million years.
The childcare aspect is definitely a thing, and we have probably suffered - definitely financially (at least for a while while we decided to live off one salary in order to make the childcare logistics easier^) - but again, friends have been amazing, groups like the NCT, close connections with people in the village, all providing a support network that does all of this and more.
[^ I am very aware that nowadays it just isn't possible for many adults to have only one parent working, we were again lucky given the circumstances at the time that we were able to do this...]