Message templates: attachments

Message Templates should allow attachments but there is no button. You require "Automation" in order to add the Click Images button. Why would you require "Automation" in order to add a file? I programmed computers for 45 years and forcing a message to be "Automated" in order to add an image is ridiculous!

Message Templates should allow PDFs not just Images. Why only allow Images? Again, this makes no sense.