I'm happy to report that you don't need to share a lot of specific interests or pastimes to have a long happy #marriage. My wife and I enjoy books, walks, museums, restaurants, but otherwise we pretty much ignore each other's favourite activities.
She spends huge time on local politics, the learn-to-swim association and the church choir, while I prep and play tabletop games, go to metal gigs and film festivals, and hunt for geocaches.