> it works without it
All security "works" until it doesn't.
All of the hand-wringing about FB and Equifax drives me nuts because all of it was completely predictable. But no one wants to hear it until the horses are out of the barn and galloping over the horizon in a cloud of dust.
Every other time I suggest it in code review, I get a `but it works without it` and then I have to re-explain a bunch of stuff.