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?
True, but physical access to phone lines is trivially easy.
Not if you live on the other side of the world. Sure tapping a phone line is easy. But physical presence it required. It would be pretty suspicious if 10,000 people were digging in your yard, but not so hard to imagine 10,000 people targeting an email account that is likely to have lucrative secrets.