It's a little odd, but not unique. I mean, people have these conversations all the time when they secretly plan to work at a different company, or become a stay-at-home parent, or make a career change. I don't have these discussions often, but for five years I talk about basically continuing and excelling in my current career trajectory. For 10 years, I often hedge about not really knowing (too far in the future, etc). Maybe think of it as "if I were still working here, I'd see myself doing X."