My DH has form for belittling my feelings about completely legitimate concerns I have. He literally laughs often in front of other people including our children. This has on more than one occasion resulted in literally injury to one of our children because he refuses to heed my worries (I asked him to close a door whilst I breastfed our youngest as I was worried our middle child would climb out of an open window in that room, he refused, laughed and guess what? Child fell out of window and cracked her head open. I could give more (less dramatic but highly irritating examples).
At a recent work BBQ we were having a discussion in front of his boss (not big boss but reporting boss) and I said "our 18 year old daughter is not sleeping in a car driven by Joe Bloggs (a young male we all know to be silly and irresponsible) after a party. She'll freeze and it's dangerous." DH laughs and makes out as if I'm going overboard and everyone is doing it and I'm fussing. As the BBQ was a family event my 13 year old daughter was also present and another colleague.
I finally just cracked and said very very calmly (possibly weirdly calmly!) "DH if you ever belittle my legitimate concerns in front of our children again I will instruct a solicitor to divorce you" and I walked off.
I accept on the face of it that I may have gone overboard in an inappropriate context. HOWEVER I have had fucking years of this and am sick of it. I am also under huge amounts of stress right now due to very very ill close family and I'm having to reduce my working hours at my own expense to look after them so am not in a good place. (Be gentle please!)