When business partners avoid discussing long-term alignment and exit strategies

My business partner and I have been scaling our agency for two years and we've never talked about what happens when one of us wants out, and now I'm starting to fantasize about leaving but I don't know if that's because I'm burned out or because we've built something I don't actually want. We keep having surface-level check-ins about the business but avoid the deeper question of whether we still want the same things.