Humbled by all the replies to my OP. I only posted originally because I felt the need to write down my feelings. I didn't expect any replies, let alone so many. It is comforting to know people on this site will make the effort to give advice.
Multiple replies were difficult to read because they made me feel pretty bad and in-the-wrong. But I appreciate those nonetheless - and I do read them and take the advice to heart.
Several replies stressed the need for communication in a marriage. I want to reassure everybody that has been tried (and continues - I'm not giving up)
I found SW yesterday (I was looking for something like Experience Project, which I used years ago). This was my first serious post, and I am impressed with the quantity and quality of feedback.