I had the same reaction. I've forgotten most of it, but that's because there have been zero times in the ~18 years (oh god...) since I had a calculus class that

I had the same reaction. I've forgotten most of it, but that's because there have been zero times in the ~18 years (oh god...) since I had a calculus class that I've seen anything I could use it for, without just making up a reason to use it.