Online Casinos

My husband and I have the same quarrel all the time and I want to know if I am in the wrong. (1)He wants to gamble on the online casinos even if we are broke(then lies about the $$, even though he knows I will catch him) I say it is a recreation and only extra $$ can be spent. (2) He says he should be able to come and go as he pleases any time he wants. I say, lets compromise and you pick 1 night a week that belongs to you and I will do the same. He says that I am trying to control him and tell him what to do. When I try to tell him how I feel about these things he brushes me off and tries to make me the bad guy, always reminding me that because he works that he is taking care of me and the kids. He runs his own biz and I do all of the clerical, web, advertising, etc…
Now can anyone help me out? I am about to give up and file for divorce
He is 2nd husband, kids are his step kids. Biological dad never been invlolved and he has been with me for the past 6 yrs. We have been married for 3 of those yrs. He is 33 and I am 36. I am his 2nd marriage as well