The Importance of Infinity

In terms of your own personal story, I promise I won't go too deep to embarrass you on this but what was it that drew you to infinity? Was it somehow that physics felt too small for you or you just liked the rigor of math or? I mean I think I got interested in math as a whole and grew away from physics before I got interest in set theory specifically. Ironically it was because I, well if you take a physics class at some point you end up being fairly fast and loose with the mathematics -  either okay with that or not.