Oh no this sounds so familiar. My DH is probably an undiagnosed on the spectrum, so he's always been quite antisocial, very much set in his ways, quite inflexible, and very much a homebody who's content with the small cheaper family outings and occasions, and going to gigs that interest him more.
Our 11 year age gap means he is a child of the 70s, and I am one of the 80s, so he's always been into Star Wars, Doctor Who etc. I'm definitely more of a Back to the Future girl lol 😆 😄
But, we also have three wonderful children, and he is loving, kind, supportive, and very dependable. He dotes on our children and I know he's always happy to be there for them, in spite of having quite a temper too (I wonder if this is an autistic thing?!)
I love him very much but worry about the future, his age, health etc. I'm not too healthy and haven't been for years. He's been with me through a lot of incredibly hard and stressful things, including ne having a head injury, mental breakdown, movement disorder, and watching my brother passing away.
I'm actually very fortunate to be with him but if I didn't love him, letalone like him, we would need to reconsider. I'd say that the OP needs to do some soul searching a bit possibly too.