First, I want to say that I am really sorry that you are going through this.

I hope my post doesn't come out sounding judgemental, because I truly do not mean it to be that way.
He told me the letter did take him by surprise, he did not know I was unhappy. He did realize he never told me "I Love You" but said he is not the most romantic person in the world, and that I hate everything (chocolate, flowers, jewelry). So I guess in his mind, those are the only three things you can use to express your feelings for a woman, and since I don't care for any of them, he thought he was good.
If he knows that you don't like that type of gift, then of course he stopped giving them to you. He may not have realized that you would still like a gift, just a more practical one.
My DH and I came to an understanding very early in our marriage. Since our anniversary is 2 days before Valentine's Day, we skipped Valentine's and anniversary gifts, and would take a long weekend trip somewhere. Once the kids came along, we now do dinner for our anniversary, and give the kids a Valentines gift. Not that we love each other less... just that we decided that was a better fit for our lifestyle, and it works for us. Maybe your DH had similar thoughts. That if you didn't want the typical romantic gifts, maybe you really didn't want a gift at all. Just trying to offer a different perspective.
He mentioned that I never told him the words. I said I used to say them, and said, "Yeah, way back in the beginning." Well, what do you want? i say it, and don't get a response, am I going to keep saying it, and feel rejected every time? I gave up.
Maybe giving up on saying it is part of the problem. If he never learned to express his love for you, and you no longer do so for him... he may feel that saying it isn't necessary. IMO, you should try saying it again... and letting him know that it would be nice to hear it in return.
I did give him MANY sentimental cards over the years, that said what I didn't. I have received joke cards all these years. I mentioned the cards, and he said he has given me cards. I said JOKE cards. He reminded me he gave me a sentimental card ONCE....I told him after all these years of getting a joke card, and never being told how you feel about me, I wasn't sure if the card said how you truly feel, if you just gave it to me, because I hadn't gotten one in so many years.
My DH and I are guilty of this. He gave me many sentimental cards through the years. They were sweet and all, but I don't like mushy cards. I always give him funny cards. I love him with my whole heart... so I expect him to know my sense of humor. I also expect him to know that my going to the store, reading all the cards, and picking the one that would make us laugh
IS an expression of my love.
We were not arguing, we were talking. I asked him if he was happy. After a silent pause..he said he was content. Well, to me, content is not happy. Content means he has settled.
Not necessarily. Contentment may be the way he labels your current relationship - meaning not the mad, passionate romance of dating and early marriage. It is the evolvement of a marriage. I would describe myself and my DH as content in our relationship. But by that I do mean that we are moving along, comfortable with the way things are, and yes... happy. Your DH is content. YOU are not. I do agree that needs to change one way or another. But being content does not mean that he has settled in his life, or isn't happy.
Reading your posts, I'm envisioning a couple that simply forgot how to show each other that they love each other. They got so used to not communicating their feelings that they found themselves in a place where they no longer know how to communicate with one another.
I agree.

But I wonder if it is not as much "forgot" how to communicate together, as much as never really learned. Counseling would help with that.
The OP stated the her DH does not tell her he loves her, does not kiss her. In other words there is a complete lack of intimacy.
Maybe it just isn't the type of intimacy that she desires. But just sharing a home and a life is in itself a form of intimacy. Disagree? Let your DH live with another woman... no hugs and kisses, no loving expressions, but share a bed and a life. There is intimacy there in the mundane, everyday life, too.
I am sad, but not devastated. I'm sad that DH is resigned without even trying. We have had a couple of more little talks, he has not tried to convince me of anything. (that he really does love me, he doesn't want to leave, we can work things out)none of that. Part of me wants to call it all off, and tell him we need to get help, but a bigger part of me is telling me this is part of the big problem. I am always the one to take the reins and get things done. This would just be another one of those times, only I don't want to do it anymore. I want for ONCE to know that he cares about something enough to make his own decision. (Like he has decided he doesn't want to leave his family, so he takes action and does what he needs to do for it not to have to happen). If he can't do that, then nothing will change. We will just go on the way we have for years, and I can't do that.
This last post is very telling. I don't think that you really want to end your marriage, but that you want it to be different. I think you are doing a disservice to yourself, your DH, and your kids to make THIS the time and event to choose to take a stand. If you want him to tell you what he REALLY feels about you, the divorce, etc... you need to say it to him! Communication is a 2-way street. From your postings, it sounds as if there are roadblocks on both ends of the street... not just his. Do not make this the time to force your DH to express himself without prompting... he doesn't know how. And if he is used to letting you make decisions and be the driver in your relationship, then it will not change without action on BOTH of your parts.
I am not saying that divorce is wrong in your situation. i just think you might need to think about it further before you get to the point of no return. PLEASE consider a counselor who is trained to draw feelings and thoughts out of people... give it a chance for the sake of your family.