Hi. I feel for both you and DH, there must be a constant undercurrent of frustration & disappointment running through your daily life. How sad.
Like most of your respondents before, nothrills, I'm in favour of repairing a marriage if it seems possible. I totally agree that you might be under-valuing what you have, and over-estimating what else might be available.
The other things you've said, about your differing communication styles and your intellectual frustration, are doubtless increasing your feeling of "wastedness". It's a pity you didn't pursue your counselling a bit longer, as you might have been able to separate your issues and deal with them individually. That approach is more likely to achieve long-term fulfillment, than blaming your husband for everything & sailing off to the wide blue yonder with a pocketful of dreams!
Not suggesting you might not need that trip; some adventures. Just that it seems likely you're mixing all your issues up with your resentment against your husband.
So what to do about it? Well, I'm a big fan of therapy - I actually feel everyone should do it, regardless of their 'ishoos'! As a creative communicator you will certainly gain richness in your thinking, and open new resource within yourself, by exploring your personal inner world with a qualified & sympathetic professional.
Vis-a-vis your marriage: I'd advise exploring yourself before you ditch the husband.
In terms of facilitating a smoother life at home whilst you get to know yourself better, there a few ideas you might consider. Sex is part of the marriage deal and, like it or not, there is probably both resentment on his part AND guilt on yours, for failing to meet your promises.
I wish more people in your situation would "just do it". The mind and body are interdependent - very often, when the mind inhibits the body, the body can free the mind. This is, crudely summarised, the theory behind Chinese medicine and homeopathy! Doing sex can make you want sex. If that happens, the increased intimacy can filter through to your relationship, improving things all round Worth a try, for a couple of months anyway.
Another thing you, as an adventurous & tactile peson, might try is sex therapy. Not instead of 'head' therapy, but as well as. I'm sure you'll find it rather fun & interesting to explore your responses with a trained expert. See where that leads.
It would be a shame to give up without giving your best, nothrills.