They are actually DH's cousins. Over the 18 years he and I have been together I have met them 3 times - at weddings.
Up until this year I have always sent a Christmas card, birth announcement cards, etc. but I don't think I can be bothered being good anymore. The final straw came last week when one of the children was missed off the card one of them sent.
It's a done deal really isn't it?