Creating my story as a stem major

Hello, physics major here, I was wondering if anyone had any ideas for how to go about my why IB / financial services story.

My real reason is I am interested in the exit opps, but I also find modeling quite interesting and satisfying but I dont think those reasons are good enough for a proper story.

I do not want to go into academia because of lack of interest and passion in research. I’ve had some experiences finance related but nothing really directly tied to ib, this summer ill be a data scientist at a well known bank. 

The issue is I don’t have some grand “aha” moment from childhood or anything like that. I just gradually realized that the analytical rigor I love in physics/math translates really well to financial modeling and deal work, and I like the idea of applying quantitative skills to high impact problems instead of pure research.

Has anyone here (especially STEM majors) successfully spun a similar story? How did you frame the “why IB” without sounding like you’re just chasing prestige/money/exits? Any specific anecdotes or ways to tie physics concepts to banking that interviewers actually bought?

Appreciate any advice, recruiting season is coming up fast and I’m trying to make this sound authentic rather than forced.
Thanks!