You are the Queen Receiver of the Alien Spew. Probably not a title you ever wanted, but oh well. I think Nomopo is right in that this reaction should have been expected. You come to him asking how you can help, he comes back with every spewish reason you have caused all the trouble here. I am sorry you have to deal with this so often. You are a saint for not taking a frying pan to his head.
As for why you don't give up, I ask myself that a lot in my own sitch. But here is the thing for me-- I don't ever want to look back on this and be able to say that I didn't do everything I could have done to keep this marriage from ending. If I get so angry and hurt that I decide to file, then I didn't do everything I could have done. If I give into all of my hurt, angry emotions and lash out at H everytime I interact with him, then I didn't do everything I could have done. I am going to have to live with myself for the rest of my life and my kids are always going to be my kids. I wouldn't want to live with the guilt that I didn't do everything possible to keep my kids' family together.
Just 'cause you might need and extra one....(((still)))