My wife is a champ with me and my train love. She'll go with me to shows and encourages me to "go ahead" and get something if I want it, has given me the living room in her parents house for my layout (they're gone now). She has only asked (generally) what an item cost.
Our earlier years were devoted to kids, college, mortgage, and life expenses.
Now, with those items not controlling our lives, we spend time indulging each others interest.
For example, we rode 2 hours to "Folkston Funnel" today for some railfanning. Took a picnic lunch. Made a day of it.
She took her Bible study and knitting and was perfectly satisfied to spend the day doing her interest while I socialized with other railfanners and watch the "CSX Show".
Jeff