My husband family is driving me crazy

It's really getting to the point where I can't stand some of the people in my husbands family but he is close with them. I feel like I have to go to family functions with him to support him but I honestly don't want my kids or myself to be around them. My husband knows all of this and supports me in my decision to not go and says that he understands after some of the things that have happened, but I still feel like I have to support him so he's not getting bombarded by them because the kids and I aren't a there which apparently is a problem because even though we have expressed that they are welcome to see the kids, they don't unless there is some sort of function that they will be at...anybody have similar problems?