Sexless marriage can it last

I have been married for 31 years. My wife is very well liked and spoken of by many people outside of our family. More than once I have been told by outsiders what a lovely and sweet person my wife is, and to outsiders that is very true.
But they are not married to my wife and don't see behind closed doors, and I don't let on how terribly sad I have become. My wife can be very proud and pompous but present to others as very sweet and soft.
When first married we had sex nearly every day. My wife does not have the same passion as I do but I tried to give her what she wanted. She would never initiate sex which made me feel like she didn't want it or care to have it. I can only peck her on the lips as she doesn't like kissing intimately. She would like to quickly finish the sexual activity. I have desires which I think are quite normal but my wife doesn't acknowledge that I should feel unsatisfied.
We used to have a cuddle but it was usually short lived when in bed as my wife can't sleep in my arms.
We have not been intimate for over 6 months (not even sure when last time we had sex) but when we were it was very sporadic. I liked to be intimate and spend time having sex but my wife just wanted to have an orgasm and quickly be over it
Sadly my wife doesn't accept that I should in any way feel bad about the situation. I often sit and suffer in silence and wonder why I don't get the same respect that I give my wife when it comes to sex or emotional intimacy. I get frustrated and sometimes blurt out my hurt in a way that makes things worse. My wife doesn't acknowledge me as someone who has feelings and I cannot remember a time when she stood up for me in (private or in public) and given support when I feel down.
She hasn't worked secularly since we have been married although she home schooled our son for seven years which is a significant achievement. So her time is mostly spent on being with her friends, reading library books, doing crosswords etc. Often when my own friends come around she would spend most of the time discussing things with them and spending time with them. I would sometimes get so frustrated that I would leave them to themselves.
I tried talking to some senior members of our church once but the view was that I was the main cause of any issues that I am experiencing as it was just not possible that I could have any reason to be frustrated with such a beautiful person as my wife.
I do get frustrated but have never been unfaithful as I try to live by biblical standards. So I feel trapped in a situation that hasn't got a solution. My wife wouldn't even dream that there should be an issue and has no sensitivity to my feelings at all. I can feel so sad and down and yet if someone were to visit us my wife would be talking and laughing so loudly as though I my feelings counted for nothing. I got married to be as one. I expect that when one partner hurts the other would also and be sympathetic, but instead my wife continues as though she was having the best time of her life. I have spoken to her about how I feel but to no avail. Being insensitive she doesn't see how her attitude could in any way make me feel neglected and saddened oven more.
Now we don't talk about sex or anything intimate so I just have to use my imagination and live off memories. My wife feels very comfortable with life and I dare not voice any frustrations of mine as I am made to feel as though I am abnormal in my views.