I truly do not understand this attitude and I can only guess comes from repeated exposure to an unfriendly environment. We're not talking here about exposing your soul to the world, a few words to explain why you want the smaller box would actually save a bunch of time and misunderstandings. Given how society works today, it's just easier.
People are shallow and often don't spend a lot of time trying to understand other people.
You won't always have the luxury to explain yourself.