My "spark" comes from my parent's career

Dad is high up at a major bank in a non-FO group (not enough to nepo me into my desired division). As a result, I've always been well-aware of the financial services industry, and I do have to say that asking him about his work has been a big part of why I ultimately became interested in the sector. At the same time, I feel like it sounds incredibly corny to say something like that in an interview. Is there any way to frame this in a way that doesn't make me sound spoiled?

I'm also worried about citing him for a "Why this firm" if I end up getting an interview there; again, even though he doesn't work in the divisions I'll be applying for, I have a relatively good idea of what the firm's leadership is like because of what I hear from him, but I also really don't want to say that in an interview.