I’m sure I could analyze my childhood to determine how my modern day spending habits developed, but long story short I somehow ended up living a life where it was important to always buy the most economical option, like, say, the giant jar of marinara sauce. Sure there’s more work to store the extra sauce, but economy of scale, yay! (Is that term is relevant here?)
I’ve since decided that this isn’t always best. Big jars of marinara sauce that go bad waste money. Tiny jars that get used up are perfect, even if they do cost more per ounce.