Mapper, the relationship problems you have are significant that is clear from your posts.

You can't change his behaviour, and his behaviour is impacting negatively on you. It sounds like he has a lot of ingrained behaviour which is impacting on all areas of his life.

You can try to work at this, idk if couples therapy would be something he could be persuaded to do. Or you can cut your losses - but you have stated you don't see this as an option.

You could continue as you are now and live with it, in which case I strongly suggest you build your own social networks or at the very least get out and do the things you want to do.

You say you like the theatre, he doesn't, so why not just book a ticket for yourself and go? I do this kind of thing all the time (my husband dislikes cinema and I like it), lots of people go to events solo, there's actually something very enjoyable about 'me' time and doing things you love (without a reluctant companion who just came to keep you company).

You need to look after yourself or you will burn out.