pinkfrocks - why are you so invested to try and uncover some (utterly fictional) dark ulterior motive behind the OP's feelings? That's exceptionally patronising.
How could anyone be happy in a marriage where their partner doesn't communicate with them on any level? It sounds like hell. And stop trying to make her feel guilty about the impact on her daughter. The OP is a person in her own goddamn right. She is in no way obliged to sacrifice her life for the convenience of others.
To the OP - on a practical level, you need to talk to your husband about this. Firstly because if you don't, your resent will just continue to build until one day you just explode, and you husband - who sounds pretty fucking clueless at the best of times - will be utterly bewildered.
You do owe it to him to discuss this first in a calm way. Write down a few points about what frustrates you the most. Then look at them and try to find practical examples.
Before you talk with him, invite him to the cinema. You don't have to talk during a film, so it's less stressful for you and him. After the film, go and get a drink somewhere with him, and just try talking to him and make a huge effort not to get frustrated. Ask him open questions that he can't just say "yes" or "no" to. You're going to have to work hard, but keep as calm as possible - he will sense if you get stressed and he'll probably just clam up even more.
Like, I imagine the conversation would go like this:
"what did you think about the film?" (it was okay)
" I thought the special fx were totally ridiculous - do you think movies were better in the days when people relied more on acting ability than special FX?" (yeah I guess so)
"I thought the plot line was pretty clever though - I don't know of many films that take that angle to work on. What did you think about it?" (I guess it was a bit outlandish)
"I really liked the scene where X did this - it was kind of predictable, but they did it in a really clever way. What was your favourite bit? (dunno)
"I kind of miss good music in films though - these days it's all just sort of weird tones and fake heartbeats. I prefer films with a great score - did you ever watch Edward Scissorhands?" (can't remember)
Give it a go for a good 45 minutes to an hour, and if you start getting angry, just say you're going to the loo/the bar/whatever, and take a deep breath.
When you speak to him about your unhappiness in general, you can cite this as a recent example of how it is impossible to have a conversation together. How he never engages with you, and how it kind of feels like he is a stranger to you.
One important thing is that you need to be assertive when you talk to him, but to stay calm. Otherwise he will go down the "huhhhh women and their hormones" route, which is utterly unhelpful.
You need to make it clear that you are extremely unhappy. When the girls were home you could ignore the problem as you had others to talk to. But now the problem - and it IS a problem - is staring you in the face and you can't ignore it anymore. Tell him that either you both work towards a situation where you can start communicating again - about anything! Films, music, hobbies, whatever - or the situation stays as it is. And if it stays as it is, you can't imagine the marriage lasting after second daughter leaves home.
Then just let him think about it.
Don't mention it again, but the next week, invite him to go and do something else, and try and discuss it afterwards. If the message has got through to him, he should be noticeably trying to engage a bit more. He'll probably be desperately out of practise, but the effort should be there.
If it isn't, then you have your answer. He doesn't see the marriage as worth making any effort for.
You can't carry a marriage alone, whatever pinkfrocks might think.