Fruitbowl, I am very close to my family (well most of them) we speak on a daily basis and just know everything about each other.
My DF is not close to his family, Hardly ever speaks to his mum (twice in the last 6 months) hasn't seen his dad since he was a child and so on.
At first I thought it was weird, but then I realised his family is pretty weird. Not very affectionate or loving. I have nothing to do with his side of them family and I don't really mind tbh.
Sounds like you are better off just ignoring them and getting on with your own life with your happy family. If they have nothing nice to say or offer don't let them poison your life