Logically I completely understand it’s their money and their belongings and I don’t want to be grabby but I’ve always been close to my parents and this is really hurtful. DH is my dc’s dad, just to make that clear too.
Aibu?
In the first place, it's usually good tax advice to leave inherited wealth down a generation because otherwise it's taxed twice at 40% if it's a substantial sum - first taxation to child, then second taxation when child dies and leaves it to the grandchildren.
second to help you understand their thinking, I am in a similar position with a sibling (I'm not married and have no kids). I've worked hard all my life and my assets are all I have to show for that hard work. My sibling who I love very much has not worked hard and married someone who I absolutely hate deeplly. I think they hurt and abuse my sibling and treat them badly. My sibling has near stokholm syndrome about their spouse. they will never leave them even though their life, personality and whole well being has been shredded by this person. spouse ruined my siblings relationship with me, our other sibling and our parents.
Over my dead body will I risk any penny of mine being in the hands of this spouse. The thought of them enjoying themself with the money I have worked hard for when I hate them so much makes me feel physically sick.
I still love my sibling but I am leaving my money next generation down in trust so that the person I hate can't get their hands on it.
You shouldn't feel hurt because it isn't about you at all. It's about your husband. It was your choice to marry someone they hated and usually families (loving families I mean) hating a spouse is because they care for you and know this person will cause you pain and life difficulty. This is part of the fall out of these decisions.
They probably feel like I do about my siblings spouse. No way would you let money fall into their hands. They know, as I do, leave it to you even with conditions, your husband would get to enjoy it and they don't want that.
Sorry you are in this situation.