This is a pretty regular argument between me and DH as we were brought up so differently.
I'm an only child of an only child. I have one cousin who I don't really know at all, and used to see my aunt uncle and her maybe once a year? Until recently my mum was 5 hours away so I saw her maybe 3-4 times a year. She's now much much closer so we see her every three-four weeks, to make sure she has a good relationship with her GC whom she adores, and I think that's really important.
DH comes from a MASSIVE family, both immediate and extended, and they are very close. When we first met he visited them weekly, and still would if I was willing but I'm not I'm afraid! (they are a drive away so it's an effort to get there). So we probably visit them every 2-3-4 weeks depending on what else is on.
I don't think I will ever be as family-focused as he would like me to be, purely because of my upbringing.
I like my little immediate family ie me DH and our DC's, and spending time at home. He prefers spending time with us plus his parents and siblings / nephews and nieces.
They all live within 5 minutes of each other. When I organised a party for DH's b'day a few months ago I had hell from them for having it in the town that we live in, not where they live!
I definitely don;t see friends as often as I;d like now. Pre-DC we'd see our little friendship group at least once weekly, and go on holiday together regularly. Children has changed all that (though we're all still close), as we';re the onlyones with them.