I have a complicated (and unhealthy) relationship with money and like a lot of issues that need examining, this one starts with childhood.
My mother is obsessed with it. My father was frugal, but beyond that he hasn’t influenced me like my mother because he died when I was very young. I knew he was good about eating leftovers for lunch, and even if the leftovers were small and hardly worth saving, he’d save it anyway. This was probably because he grew up during China’s Cultural Revolution.