Yes ma'am.
What do I talk with my wife about?
Yesterday, we agreed to sit on the bed and hate the world. If we don't hate the world, we sometimes talk about dinosaurs or other big animals or I fondle her tiddies on the bed, which makes me happy. Or we cook. I think this idea that your wife is your soulmate who can cater to all your needs is highly idealistic. I like idealists, but I still need other people. There's a good reason I abandoned idealism.
Regarding having a defeatist attitude, I don't think that's really accurate. I actively still discuss with people all the time, and have for years. It's not entirely pointless, but it is unsatisfactory. I host research discussions on a weekly basis involving people from different subfields, meet up eith academics for lunch and for coffee breaks, and indeed discuss my thoughts all the time, including with dumb dumbs. I don't discriminate at all, intellectually. There are some who are disinclined to chat, and that's fine, but the majority is unable to converse at my level, despite my best effort. It's not possible for them to keep up, and I blame people's internal framework for building their thoughts. I know it sounds incredibly arrogant, but I think I've progressed to a point that is ahead of thr large majority of people, in my internal model for thought.
Depending a bit on the subject matter, for those big questions, I feel lonely in dealing with them. It's not so much that I've decided that it's the case as it is facing the reality of the situation.
You ex, the peofessor, may have been fine with discussing with you but that doesn't mean he didn't feel alone in their thoughts. Or maybe he, like I, spent most of his discussions with women imagining them naked instead of focusing on anything intellectual. The conversation has a funny way of flowing when that happens. I think it's an interesting question, how alone we all feel in our thoughts. I think it correlates with how much you think. And I think a lot.