I am just now, in the last couple of months, separating from my husband.
We have numerous issues and differences but a few are similar to yours.
We have 2 DC. Dd wasn't exactly planned, DS was but dh went along with it to keep me happy. He doesn't regret having DS for a second but there is a slight resentment braise h didn't want a second child. He feels he did it for me, and I am not 'grateful' enough about his sacrifice for me (not his words but how he behaves)
Family- he had decided my family hate him. That no one likes him. He says tha no one makes the effort to talk to him and he always feels uncomfortable and he doesn't like any of them because he comes from a different culture and no one understands.
It has always been a big issue in our relationship.
When we first started dating and I wanted to introduce him to my family he made endless excuses not to meet them. I didn't realise at the time what was happening. I thought he was shy. Then he did meet everyone but it turns out that over the years e came up with excuse after excuse not to go to family events. And if I hosted anything at home he would always be polite but he would disappear often found him napping or he would play with the kids, in another room... Making himself 'busy'.
It always felt rude and humiliating. It was embarrassing. Cos my family were very tolerant and were never rude. Tried hard to involve him and make him welcome but he always made it so difficult.
For example: he is Muslim so they would always ( and for some go out of their way and at expense) provide a halal portion of food. He would always act embarrassed and a bit annoyed and make out like they shouldn't have and it made no sense... Why not just say thank you and eat the food???
Nope, he always acted annoyed about it.
Over the years I stopped asking him to come. And he made jokes out of it like 'looking forward to me day off' which meant he was looking forward to a relaxing day at home with no work or kids to do absolutely nothing at all. It never ever concerned him that I was left managing 2 young DC, one a refluxy new born on my own.
The final straw came on Mother's Day this year.
I was hosting so h couldn't avoid it. He actively went out of his way to start a fight over nothing.
Then instead of eating he insisted on feeding DS (who can feed himself) he put football on while everyone else was eating. He then decided to clean the kitchen, then the bathroom.
We were also celebrating my birthday and we were waiting for him so we could do presents.
He then went out to Tesco. When he retuned he went to bed.
His excuse for this behaviour? Apparently no one said hello to him when they arrived.
Very long winded post but my point is this: it has had a huge destructive force on our relationship.
Family is important to me, if I was important to him I can't understand why I wasn't important enough for him to make the effort for one day every couple of months.