That’s the reason we have to still use fax machines right?
I know there are ways to do encryption like PGP on your message directly or I think email sent over TLS? But that isn’t the default right and that’s why I can’t send a picture of my license to the insurance company directly over email?
Anything we want to add to the e-mail system has to be a backwards-compatible with the older system. Otherwise, few people will actually use it.