Looking for input please

my husband (37) and I (33) have come to a point where I dont want to continue anymore. we have been married 3 years. This is another Christmas that has just been awful. I made Christmas Eve dinner, he complained about the meat, and me asking him to put a nice shirt on with the family. told me I need to consult him first about asking him to change his shirt. I made Christmas breakfast. No gratitude on anything. I initiated all the holiday " magic" outings with his three kids.I wrapped all the presents. I help him pick out a few but for the most part he purchased the gifts. He had a particular gun that he really wanted and I couldn't find it anywhere. I called every gun store in town and looked online. so last minute I went and put a gun on layaway so he could go in and see if its one he'd like, or pick a different one since I couldn't find the exact model. Christmas Day while his kids went to his moms, his first comment to me is how disappointed he was that I didn't make the effort to get the one thing he asked for. I said I made every effort, and did the next best thing I could. He told me there's no way I tried, and that I was lying. Then laid into me about how I didn't do anything for the kids. That he bought all the presents. I said yes you may have "purchased" the gifts, with our money, but since when do parents do separate gifts for kids. Ive always understood gifts to be from both parents... He told me I did nothing this season for the kids.He told me the stocking stuffers I picked out were stupid. He belittled me as a step mom and everything I do. Ive been a hair away from filing from divorce, and I brought that up. In my anger I said just take back what you got me. He got me a nice coach purse that id been wanting. So he did. Im honestly not shocked that he did but i'm disgusted by it. I'm disgusted by his behavior, his attitude and actions. Ive completely lost respect for him over the last year, and how he speaks and treats me. This is just one of the many occasions something like this blows up and I dont deserve this.