I think it is very, very difficult to begin thinking of someone 's behaviour in a way that allows you, or requires you, to get angry about it.
Feeling angry, especially when it's about something as serious as this, is a horrible, horrible experience and very hard work. You have to go through it all over again in your head, while you cry, while you realise, mentally and physically, how much it hurts that someone did this to you, and how much you have lost because you thought you could trust them and have built your entire life around them.
You've got to grieve, essentially, and that's exceedingly painful 
I can totally understand why sometimes women just do not want to go there. It's far easier to stay and pretend it's all OK, because that way you don't have to go through the grieving process, the fury, the anger and the horrible pain of it.
OP - I am so sorry you are in this position. Your husband no doubt has some very good points and you loved him when you got married, and you will still hae that residual attachment to him, no matter what he has done.
You don't have to change that, just yet. But please do realise that it is a very fine line between hanging on to your marriage as it was in your mind's eye, and suddenly realising that he has hurt you very, very badly, and that he is actually a threat to you now, even if he wasn't when you met him.
You have to get angry at some point. The longer you leave it, and stay in this denial state, the worse and the bigger it will be.
My advice is to get your ducks in a row, get some real life support if you possibly can (see your GP maybe?) and then let it start to come out.
Once it does it will propel you into getting away from him and sorting everything out.
