From what I know, have seen from my friends, colleagues and wider family - it’s more normal than not to have some family support.
On mumsnet it almost seems more ‘normal’ to have none. In other parenting groups/ forums I’ve seen, when someone is complaining of a lack of childcare for example, I see nothing but supportive comments and a level of expectation that most families want to be involved if they can - on mumsnet any post like that would be shot down with a ‘nobody owes you childcare’ and endless stories about how they coped with 5 under 5, a husband who worked away and no family, friends or neighbours within a 100 mile radius.
I do seem quite surrounded by the ‘my parents do childcare half the week/ pick them up from school 3 days a week/ have them regularly for the weekend so we can have a night away together’ type and get a pang of jealousy sometimes but I always knew I couldn’t really expect that in our situation.
We’re somewhere in the middle. We’re older parents, my own parents are no longer with us and DH’s parents are getting older themselves so whilst they can manage to cover e.g. a hospital appointment or a real emergency, we wouldn’t ask them for much more than that. They help and are involved in other ways though - not overly or to the extent that I think my mum would have been, but they’ll come to her dance show or they bought her first school shoes, that kind of thing.
DH has no other family in this country. I have a bigger family - my siblings are older with their own children and grandchildren - and those grown up children are closer in age to me. Everyone works and has busy lives, so I wouldn’t ask often, but there’s people we can ask in a pinch. And lots of people who love and see DD regularly which is more important to me.
I’ve been really conscious of building friendships with other local mums and we are able to help each other out occasionally too - e.g one of my now close friends I met at a baby group and our girls are now in the same class, we’ve been able to pick the other one up and give them an easy tea on a few occasions to help the other one.