My "let her get a house and pretend to be interested in tile" post comes down to this for me. If she has a strong interest in something that you have no interest in, you are at a crossroads. You can say, this is not what I like, this is not me, so too bad, the marriage is over. I am not going to be someone I am not.
Or you can say, this is not what I like, this is not me, but it is important to her, so no matter how I feel about it, I am going to go along with it and do it in a way that makes her as happy as possible. If it makes her as happy as possible for me to have detailed conversations about the merits of different kitchen faucets in a cheerful voice, then I will have detailed conversations about different kitchen faucets in a cheerful voice. I want to make the experience as great for her as possible. (There are thousands of different kitchen faucets, I learned).
When I announced when I was 25 that I wanted to buy an expensive stereo and lots of albums, she had no interest in either. But she was enthusiastic about our spending all of our money on it, and went with me to stereo stores and listened to stereos and make helpful comments about how they sounded to her. It was because I wanted it.
Now if she announced that she wanted us to get involved in Satan worship or something genuinely evil or destructive, I would draw a line there. Otherwise, I'm there for her, however much it takes me out of my zone of preference.