> I mean, the same argument has been applied to other cryptographic tools.

Intent matters.

> Why encrypt your messages, unless you're sending something sketchy?

Because I am sending something private, I can't believe people bring this dumbass argument still, and even here.

> Why obfuscate programs, unless you're hiding something?

Why indeed. This one is the red flag, not message in your e-mail client being encrypted. Again. Intent, and context, matters.