Years ago at a Tacoma PCL game, pitching coach Chuck Estrada growled this question to a group of adult collectors.
A couple just giggled. I just pulled back. One squeaked, “Collect it?”
One eyebrow arched. Estrada smirked. He stomped past.
Writing or in person, the WHY needs to be there in your “pitch” for an autograph. If you can’t say why you want that precise person, save your energy and stamps.