As for the unlikely source of this, I heard it in a jazz improv class I was taking with David Bloom earlier this year. Someone was complaining about the diminished scale or some shit and he bluntly said that. Meaning: "If you haven't put any effort into mastering it, you don't get to hate it."
Kid: "I hate the quadratic formula."
Me: "Well, how much time have you spent on it?"
Kid: <blank stare>
Me: "You're not good enough at it to hate it."
@dabeaz the sad thing is that there are really good reasons to hate the quadratic formula, and it’s true that your average or above average high school student isn’t good enough to hate it
@joXn Don't even get me started about the greater problem of "Algebra 2". Kid is suffering through that right now and it's every bit as bad as I remember.