Your DH doesn't sound that much different to mine TBH, but I enjoy it. There are some differences though - we do have sex regularly and I work full time. We also have our youngest DD still living at home, who is good company.
DH does spend most of his downtime on his computer though - his fave hobby is buying and selling on ebay, but also gaming. Apart from the odd bit of woodworking, which he enjoys, I sort out all the house improvements, sort out all the bills etc. I do all the laundry, cleaning, but he does all the cooking. The laundry/cleaning doesn't take long though, and I work full time?
We do sit down for a family meal together every evening, cooked by him, and chat then though, but we rarely watch TV together.
We have totally different hobbies to each other, and apart from the evening meal, we spend most of our time doing our own thing. I really like it though - I wouldn't have time to do all the things I enjoy otherwise, and I need my alone time, just reading a book or whatever. I suppose were as bad as each other - I'd get worn down if he was constantly wanting to do things together.
I think the way you feel about the situation is mostly in your control TBH - if you're thinking of divorcing anyway, but can't because of the house, then why can't you effectively separate, but just live together as housemates. It doesn't sound like he's abusive or anything? Or go the other way, and have a good talk about doing the occasional date night, sex, an occasional day out - actually plan it and put it in the calendar, draw up a set of rules - one date night or afternoon together per fortnight or something, and maybe look into couples therapy.