You have never received automated spam letters?

When the thought is "I'd like this person to know how grateful I am", the medium doesn't really matter.

When the thought is "I owe this person a 'Thank You'", the handwritten letter gives an illusion of deeper thought. That's why there are fonts designed to look handwritten. To the receiver, they're just junk mail. I'd rather not get them at all, in any form. I was happy just having done the thing, and the thoughtless response slightly lessens that joy.

We’re well past that. Social media killed that first. Some people have a hard time articulating their thoughts. If AI is a tool to help, why is that bad?

I shouldn't have to explain this, but a letter is a medium of communication, that could just as easily be written by a LLM (and transcribed by a human onto paper).