Let's say I'm sitting outside of your office with a bazooka and boxes of high explosives. You ask my why, and I say, "someone might try to rob this office." You say, "somehow, that does not persuade me that a stranger should loiter outside of my workplace with a massive stockpile of ordinance." I reply, "what's your solution to combat robberies?"
let's say I put a lock on an office door. You say "Why? Bazookas will get through the door anyways".
I don't know how I feel about this change but context does in fact matter about whether something is a good idea or not